diff --git a/NuGet.config b/NuGet.config
index 05d6d50db75d..1c2f27eb90ce 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -6,10 +6,8 @@
     <!--  Begin: Package sources from dotnet-extensions -->
     <!--  End: Package sources from dotnet-extensions -->
     <!--  Begin: Package sources from dotnet-efcore -->
-    <add key="darc-int-dotnet-efcore-a947fe2" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-efcore-a947fe22/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-efcore -->
     <!--  Begin: Package sources from dotnet-runtime -->
-    <add key="darc-int-dotnet-runtime-574100b" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-runtime-574100b6/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-runtime -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
@@ -30,10 +28,8 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-efcore -->
-    <add key="darc-int-dotnet-efcore-a947fe2" value="true" />
     <!--  End: Package sources from dotnet-efcore -->
     <!--  Begin: Package sources from dotnet-runtime -->
-    <add key="darc-int-dotnet-runtime-574100b" value="true" />
     <!--  End: Package sources from dotnet-runtime -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
   </disabledPackageSources>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 089a2fa64939..ccd47c663195 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -376,26 +376,26 @@
       <Uri>https://github.com/dotnet/winforms</Uri>
       <Sha>abda8e3bfa78319363526b5a5f86863ec979940e</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="8.0.0-beta.25407.1">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="8.0.0-beta.25504.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>a5ec3fab69ac440afe6764b2e046af6e8fcafa74</Sha>
+      <Sha>3edea53c9b10e4bc63de863d71a05d47d9bb5b69</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.Installers" Version="8.0.0-beta.25407.1">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.Installers" Version="8.0.0-beta.25504.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>a5ec3fab69ac440afe6764b2e046af6e8fcafa74</Sha>
+      <Sha>3edea53c9b10e4bc63de863d71a05d47d9bb5b69</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.Templating" Version="8.0.0-beta.25407.1">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.Templating" Version="8.0.0-beta.25504.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>a5ec3fab69ac440afe6764b2e046af6e8fcafa74</Sha>
+      <Sha>3edea53c9b10e4bc63de863d71a05d47d9bb5b69</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="8.0.0-beta.25407.1">
+    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="8.0.0-beta.25504.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>a5ec3fab69ac440afe6764b2e046af6e8fcafa74</Sha>
+      <Sha>3edea53c9b10e4bc63de863d71a05d47d9bb5b69</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.RemoteExecutor" Version="8.0.0-beta.25407.1">
+    <Dependency Name="Microsoft.DotNet.RemoteExecutor" Version="8.0.0-beta.25504.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>a5ec3fab69ac440afe6764b2e046af6e8fcafa74</Sha>
+      <Sha>3edea53c9b10e4bc63de863d71a05d47d9bb5b69</Sha>
     </Dependency>
     <Dependency Name="Microsoft.Extensions.Diagnostics.Testing" Version="9.0.0-preview.9.24518.1">
       <Uri>https://github.com/dotnet/extensions</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 1a21cf67e935..ac132e0ce282 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -162,9 +162,9 @@
     <NuGetVersioningVersion>6.2.4</NuGetVersioningVersion>
     <NuGetFrameworksVersion>6.2.4</NuGetFrameworksVersion>
     <!-- Packages from dotnet/arcade -->
-    <MicrosoftDotNetBuildTasksInstallersVersion>8.0.0-beta.25407.1</MicrosoftDotNetBuildTasksInstallersVersion>
-    <MicrosoftDotNetBuildTasksTemplatingVersion>8.0.0-beta.25407.1</MicrosoftDotNetBuildTasksTemplatingVersion>
-    <MicrosoftDotNetRemoteExecutorVersion>8.0.0-beta.25407.1</MicrosoftDotNetRemoteExecutorVersion>
+    <MicrosoftDotNetBuildTasksInstallersVersion>8.0.0-beta.25504.1</MicrosoftDotNetBuildTasksInstallersVersion>
+    <MicrosoftDotNetBuildTasksTemplatingVersion>8.0.0-beta.25504.1</MicrosoftDotNetBuildTasksTemplatingVersion>
+    <MicrosoftDotNetRemoteExecutorVersion>8.0.0-beta.25504.1</MicrosoftDotNetRemoteExecutorVersion>
     <!-- Packages from dotnet/source-build-externals -->
     <MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>8.0.0-alpha.1.25202.2</MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>
     <!-- Packages from dotnet/source-build-reference-packages -->
diff --git a/eng/common/SetupNugetSources.ps1 b/eng/common/SetupNugetSources.ps1
index efa2fd72bfaa..59b2d55e1a33 100644
--- a/eng/common/SetupNugetSources.ps1
+++ b/eng/common/SetupNugetSources.ps1
@@ -17,8 +17,8 @@
 #    displayName: Setup Private Feeds Credentials
 #    condition: eq(variables['Agent.OS'], 'Windows_NT')
 #    inputs:
-#      filePath: $(Build.SourcesDirectory)/eng/common/SetupNugetSources.ps1
-#      arguments: -ConfigFile $(Build.SourcesDirectory)/NuGet.config -Password $Env:Token
+#      filePath: $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.ps1
+#      arguments: -ConfigFile $(System.DefaultWorkingDirectory)/NuGet.config -Password $Env:Token
 #    env:
 #      Token: $(dn-bot-dnceng-artifact-feeds-rw)
 
diff --git a/eng/common/SetupNugetSources.sh b/eng/common/SetupNugetSources.sh
index d387c7eac95e..c0e7bbef21c4 100755
--- a/eng/common/SetupNugetSources.sh
+++ b/eng/common/SetupNugetSources.sh
@@ -18,8 +18,8 @@
 #  - task: Bash@3
 #    displayName: Setup Private Feeds Credentials
 #    inputs:
-#      filePath: $(Build.SourcesDirectory)/eng/common/SetupNugetSources.sh
-#      arguments: $(Build.SourcesDirectory)/NuGet.config $Token
+#      filePath: $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.sh
+#      arguments: $(System.DefaultWorkingDirectory)/NuGet.config $Token
 #    condition: ne(variables['Agent.OS'], 'Windows_NT')
 #    env:
 #      Token: $(dn-bot-dnceng-artifact-feeds-rw)
diff --git a/eng/common/post-build/nuget-validation.ps1 b/eng/common/post-build/nuget-validation.ps1
index dab3534ab538..22b1c4dfe4a7 100644
--- a/eng/common/post-build/nuget-validation.ps1
+++ b/eng/common/post-build/nuget-validation.ps1
@@ -2,20 +2,13 @@
 # tool: https://github.com/NuGet/NuGetGallery/tree/jver-verify/src/VerifyMicrosoftPackage
 
 param(
-  [Parameter(Mandatory=$true)][string] $PackagesPath,           # Path to where the packages to be validated are
-  [Parameter(Mandatory=$true)][string] $ToolDestinationPath     # Where the validation tool should be downloaded to
+  [Parameter(Mandatory=$true)][string] $PackagesPath # Path to where the packages to be validated are
 )
 
 try {
   . $PSScriptRoot\post-build-utils.ps1
 
-  $url = 'https://raw.githubusercontent.com/NuGet/NuGetGallery/3e25ad135146676bcab0050a516939d9958bfa5d/src/VerifyMicrosoftPackage/verify.ps1'
-
-  New-Item -ItemType 'directory' -Path ${ToolDestinationPath} -Force
-
-  Invoke-WebRequest $url -OutFile ${ToolDestinationPath}\verify.ps1 
-
-  & ${ToolDestinationPath}\verify.ps1 ${PackagesPath}\*.nupkg
+  & $PSScriptRoot\nuget-verification.ps1 ${PackagesPath}\*.nupkg
 } 
 catch {
   Write-Host $_.ScriptStackTrace
diff --git a/eng/common/post-build/nuget-verification.ps1 b/eng/common/post-build/nuget-verification.ps1
new file mode 100644
index 000000000000..8467dbf8e7c2
--- /dev/null
+++ b/eng/common/post-build/nuget-verification.ps1
@@ -0,0 +1,121 @@
+<#
+.SYNOPSIS
+    Verifies that Microsoft NuGet packages have proper metadata.
+.DESCRIPTION
+    Downloads a verification tool and runs metadata validation on the provided NuGet packages. This script writes an
+    error if any of the provided packages fail validation. All arguments provided to this PowerShell script that do not
+    match PowerShell parameters are passed on to the verification tool downloaded during the execution of this script.
+.PARAMETER NuGetExePath
+    The path to the nuget.exe binary to use. If not provided, nuget.exe will be downloaded into the -DownloadPath
+    directory.
+.PARAMETER PackageSource
+    The package source to use to download the verification tool. If not provided, nuget.org will be used.
+.PARAMETER DownloadPath
+    The directory path to download the verification tool and nuget.exe to. If not provided,
+    %TEMP%\NuGet.VerifyNuGetPackage will be used.
+.PARAMETER args
+    Arguments that will be passed to the verification tool.
+.EXAMPLE
+    PS> .\verify.ps1 *.nupkg
+    Verifies the metadata of all .nupkg files in the currect working directory.
+.EXAMPLE
+    PS> .\verify.ps1 --help
+    Displays the help text of the downloaded verifiction tool.
+.LINK
+    https://github.com/NuGet/NuGetGallery/blob/master/src/VerifyMicrosoftPackage/README.md
+#>
+
+# This script was copied from https://github.com/NuGet/NuGetGallery/blob/3e25ad135146676bcab0050a516939d9958bfa5d/src/VerifyMicrosoftPackage/verify.ps1
+
+[CmdletBinding(PositionalBinding = $false)]
+param(
+   [string]$NuGetExePath,
+   [string]$PackageSource = "https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json",
+   [string]$DownloadPath,
+   [Parameter(ValueFromRemainingArguments = $true)]
+   [string[]]$args
+)
+
+# The URL to download nuget.exe.
+$nugetExeUrl = "https://dist.nuget.org/win-x86-commandline/v4.9.4/nuget.exe"
+
+# The package ID of the verification tool.
+$packageId = "NuGet.VerifyMicrosoftPackage"
+
+# The location that nuget.exe and the verification tool will be downloaded to.
+if (!$DownloadPath) {
+    $DownloadPath = (Join-Path $env:TEMP "NuGet.VerifyMicrosoftPackage")
+}
+
+$fence = New-Object -TypeName string -ArgumentList '=', 80
+
+# Create the download directory, if it doesn't already exist.
+if (!(Test-Path $DownloadPath)) {
+    New-Item -ItemType Directory $DownloadPath | Out-Null
+}
+Write-Host "Using download path: $DownloadPath"
+
+if ($NuGetExePath) {
+    $nuget = $NuGetExePath
+} else {
+    $downloadedNuGetExe = Join-Path $DownloadPath "nuget.exe"
+    
+    # Download nuget.exe, if it doesn't already exist.
+    if (!(Test-Path $downloadedNuGetExe)) {
+        Write-Host "Downloading nuget.exe from $nugetExeUrl..."
+        $ProgressPreference = 'SilentlyContinue'
+        try {
+            Invoke-WebRequest $nugetExeUrl -OutFile $downloadedNuGetExe
+            $ProgressPreference = 'Continue'
+        } catch {
+            $ProgressPreference = 'Continue'
+            Write-Error $_
+            Write-Error "nuget.exe failed to download."
+            exit
+        }
+    }
+
+    $nuget = $downloadedNuGetExe
+}
+
+Write-Host "Using nuget.exe path: $nuget"
+Write-Host " "
+
+# Download the latest version of the verification tool.
+Write-Host "Downloading the latest version of $packageId from $packageSource..."
+Write-Host $fence
+& $nuget install $packageId `
+    -Prerelease `
+    -OutputDirectory $DownloadPath `
+    -Source $PackageSource
+Write-Host $fence
+Write-Host " "
+
+if ($LASTEXITCODE -ne 0) {
+    Write-Error "nuget.exe failed to fetch the verify tool."
+    exit
+}
+
+# Find the most recently downloaded tool
+Write-Host "Finding the most recently downloaded verification tool."
+$verifyProbePath = Join-Path $DownloadPath "$packageId.*"
+$verifyPath = Get-ChildItem -Path $verifyProbePath -Directory `
+    | Sort-Object -Property LastWriteTime -Descending `
+    | Select-Object -First 1
+$verify = Join-Path $verifyPath "tools\NuGet.VerifyMicrosoftPackage.exe"
+Write-Host "Using verification tool: $verify"
+Write-Host " "
+
+# Execute the verification tool.
+Write-Host "Executing the verify tool..."
+Write-Host $fence
+& $verify $args
+Write-Host $fence
+Write-Host " "
+
+# Respond to the exit code.
+if ($LASTEXITCODE -ne 0) {
+    Write-Error "The verify tool found some problems."
+} else {
+    Write-Output "The verify tool succeeded."
+}
\ No newline at end of file
diff --git a/eng/common/templates-official/job/job.yml b/eng/common/templates-official/job/job.yml
index b98f6a6505d3..4cca1114fcca 100644
--- a/eng/common/templates-official/job/job.yml
+++ b/eng/common/templates-official/job/job.yml
@@ -38,7 +38,7 @@ parameters:
 # Sbom related params
   enableSbom: true
   PackageVersion: 7.0.0
-  BuildDropPath: '$(Build.SourcesDirectory)/artifacts'
+  BuildDropPath: '$(System.DefaultWorkingDirectory)/artifacts'
   ManifestDirPath: $(Build.ArtifactStagingDirectory)/sbom
 
 jobs:
@@ -167,7 +167,7 @@ jobs:
       inputs:
         languages: ${{ coalesce(parameters.richCodeNavigationLanguage, 'csharp') }}
         environment: ${{ coalesce(parameters.richCodeNavigationEnvironment, 'production') }}
-        richNavLogOutputDirectory: $(Build.SourcesDirectory)/artifacts/bin
+        richNavLogOutputDirectory: $(System.DefaultWorkingDirectory)/artifacts/bin
         uploadRichNavArtifacts: ${{ coalesce(parameters.richCodeNavigationUploadArtifacts, false) }}
       continueOnError: true
 
@@ -226,7 +226,7 @@ jobs:
     - task: 1ES.PublishBuildArtifacts@1
       displayName: Publish Logs
       inputs:
-        PathtoPublish: '$(Build.SourcesDirectory)/artifacts/log/$(_BuildConfig)'
+        PathtoPublish: '$(System.DefaultWorkingDirectory)/artifacts/log/$(_BuildConfig)'
         PublishLocation: Container
         ArtifactName: ${{ coalesce(parameters.enablePublishBuildArtifacts.artifactName, '$(Agent.Os)_$(Agent.JobName)' ) }}
       continueOnError: true
@@ -238,7 +238,7 @@ jobs:
       inputs:
         testResultsFormat: 'xUnit'
         testResultsFiles: '*.xml'
-        searchFolder: '$(Build.SourcesDirectory)/artifacts/TestResults/$(_BuildConfig)'
+        searchFolder: '$(System.DefaultWorkingDirectory)/artifacts/TestResults/$(_BuildConfig)'
         testRunTitle: ${{ coalesce(parameters.testRunTitle, parameters.name, '$(System.JobName)') }}-xunit
         mergeTestResults: ${{ parameters.mergeTestResults }}
       continueOnError: true
@@ -249,7 +249,7 @@ jobs:
       inputs:
         testResultsFormat: 'VSTest'
         testResultsFiles: '*.trx'
-        searchFolder: '$(Build.SourcesDirectory)/artifacts/TestResults/$(_BuildConfig)'
+        searchFolder: '$(System.DefaultWorkingDirectory)/artifacts/TestResults/$(_BuildConfig)'
         testRunTitle: ${{ coalesce(parameters.testRunTitle, parameters.name, '$(System.JobName)') }}-trx
         mergeTestResults: ${{ parameters.mergeTestResults }}
       continueOnError: true
@@ -265,7 +265,7 @@ jobs:
   - ${{ if eq(parameters.enableBuildRetry, 'true') }}:
     - task: 1ES.PublishPipelineArtifact@1
       inputs:
-        targetPath: '$(Build.SourcesDirectory)\eng\common\BuildConfiguration'
+        targetPath: '$(System.DefaultWorkingDirectory)\eng\common\BuildConfiguration'
         artifactName: 'BuildConfiguration'
       displayName: 'Publish build retry configuration'
       continueOnError: true
diff --git a/eng/common/templates-official/job/onelocbuild.yml b/eng/common/templates-official/job/onelocbuild.yml
index 52b4d05d3f8d..68e7a65605c5 100644
--- a/eng/common/templates-official/job/onelocbuild.yml
+++ b/eng/common/templates-official/job/onelocbuild.yml
@@ -8,7 +8,7 @@ parameters:
   CeapexPat: $(dn-bot-ceapex-package-r) # PAT for the loc AzDO instance https://dev.azure.com/ceapex
   GithubPat: $(BotAccount-dotnet-bot-repo-PAT)
 
-  SourcesDirectory: $(Build.SourcesDirectory)
+  SourcesDirectory: $(System.DefaultWorkingDirectory)
   CreatePr: true
   AutoCompletePr: false
   ReusePr: true
@@ -63,7 +63,7 @@ jobs:
     - ${{ if ne(parameters.SkipLocProjectJsonGeneration, 'true') }}:
       - task: Powershell@2
         inputs:
-          filePath: $(Build.SourcesDirectory)/eng/common/generate-locproject.ps1
+          filePath: $(System.DefaultWorkingDirectory)/eng/common/generate-locproject.ps1
           arguments: $(_GenerateLocProjectArguments)
         displayName: Generate LocProject.json
         condition: ${{ parameters.condition }}
@@ -106,7 +106,7 @@ jobs:
     - task: 1ES.PublishBuildArtifacts@1
       displayName: Publish LocProject.json
       inputs:
-        PathtoPublish: '$(Build.SourcesDirectory)/eng/Localize/'
+        PathtoPublish: '$(System.DefaultWorkingDirectory)/eng/Localize/'
         PublishLocation: Container
         ArtifactName: Loc
       condition: ${{ parameters.condition }}
\ No newline at end of file
diff --git a/eng/common/templates-official/job/publish-build-assets.yml b/eng/common/templates-official/job/publish-build-assets.yml
index b2ccd9df6801..a99d79df863c 100644
--- a/eng/common/templates-official/job/publish-build-assets.yml
+++ b/eng/common/templates-official/job/publish-build-assets.yml
@@ -30,6 +30,10 @@ parameters:
 
   signingValidationAdditionalParameters: ''
 
+  repositoryAlias: self
+
+  officialBuildId: ''
+
 jobs:
 - job: Asset_Registry_Publish
 
@@ -50,6 +54,11 @@ jobs:
       value: false
     - ${{ if eq(parameters.publishAssetsImmediately, 'true') }}:
       - template: /eng/common/templates-official/post-build/common-variables.yml
+  - name: OfficialBuildId
+    ${{ if ne(parameters.officialBuildId, '') }}:
+      value: ${{ parameters.officialBuildId }}
+    ${{ else }}:
+      value: $(Build.BuildNumber)
 
   pool:
     # We don't use the collection uri here because it might vary (.visualstudio.com vs. dev.azure.com)
@@ -65,6 +74,9 @@ jobs:
       os: windows
   steps:
   - ${{ if and(eq(parameters.runAsPublic, 'false'), ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')) }}:
+    - checkout: ${{ parameters.repositoryAlias }}
+      fetchDepth: 3
+      clean: true
     - task: DownloadBuildArtifacts@0
       displayName: Download artifact
       inputs:
@@ -82,13 +94,13 @@ jobs:
         azureSubscription: "Darc: Maestro Production"
         scriptType: ps
         scriptLocation: scriptPath
-        scriptPath: $(Build.SourcesDirectory)/eng/common/sdk-task.ps1
+        scriptPath: $(System.DefaultWorkingDirectory)/eng/common/sdk-task.ps1
         arguments: >
           -task PublishBuildAssets -restore -msbuildEngine dotnet
           /p:ManifestsPath='$(Build.StagingDirectory)/Download/AssetManifests'
           /p:MaestroApiEndpoint=https://maestro.dot.net
           /p:PublishUsingPipelines=${{ parameters.publishUsingPipelines }}
-          /p:OfficialBuildId=$(Build.BuildNumber)
+          /p:OfficialBuildId=$(OfficialBuildId)
       condition: ${{ parameters.condition }}
       continueOnError: ${{ parameters.continueOnError }}
     
@@ -115,7 +127,7 @@ jobs:
       inputs:
         targetType: inline
         script: |
-          $symbolExclusionfile = "$(Build.SourcesDirectory)/eng/SymbolPublishingExclusionsFile.txt"
+          $symbolExclusionfile = "$(System.DefaultWorkingDirectory)/eng/SymbolPublishingExclusionsFile.txt"
           if(Test-Path -Path $symbolExclusionfile)
           {
             Write-Host "SymbolExclusionFile exists"
@@ -130,7 +142,7 @@ jobs:
       displayName: Publish SymbolPublishingExclusionsFile Artifact
       condition: eq(variables['SymbolExclusionFile'], 'true') 
       inputs:
-        PathtoPublish: '$(Build.SourcesDirectory)/eng/SymbolPublishingExclusionsFile.txt'
+        PathtoPublish: '$(System.DefaultWorkingDirectory)/eng/SymbolPublishingExclusionsFile.txt'
         PublishLocation: Container
         ArtifactName: ReleaseConfigs
 
@@ -146,7 +158,7 @@ jobs:
           azureSubscription: "Darc: Maestro Production"
           scriptType: ps
           scriptLocation: scriptPath
-          scriptPath: $(Build.SourcesDirectory)/eng/common/post-build/publish-using-darc.ps1
+          scriptPath: $(System.DefaultWorkingDirectory)/eng/common/post-build/publish-using-darc.ps1
           arguments: -BuildId $(BARBuildId)
             -PublishingInfraVersion 3
             -AzdoToken '$(System.AccessToken)'
diff --git a/eng/common/templates-official/job/source-build.yml b/eng/common/templates-official/job/source-build.yml
index 4217d6d8b148..7b9c58a90c5e 100644
--- a/eng/common/templates-official/job/source-build.yml
+++ b/eng/common/templates-official/job/source-build.yml
@@ -31,6 +31,9 @@ parameters:
   #   container and pool.
   platform: {}
 
+  # Optional list of directories to ignore for component governance scans.
+  cgIgnoreDirectories: []
+
   # If set to true and running on a non-public project,
   # Internal blob storage locations will be enabled.
   # This is not enabled by default because many repositories do not need internal sources
@@ -73,3 +76,4 @@ jobs:
   - template: /eng/common/templates-official/steps/source-build.yml
     parameters:
       platform: ${{ parameters.platform }}
+      cgIgnoreDirectories: ${{ parameters.cgIgnoreDirectories }}
diff --git a/eng/common/templates-official/job/source-index-stage1.yml b/eng/common/templates-official/job/source-index-stage1.yml
index fb632b71a250..0579e692fc81 100644
--- a/eng/common/templates-official/job/source-index-stage1.yml
+++ b/eng/common/templates-official/job/source-index-stage1.yml
@@ -59,7 +59,7 @@ jobs:
   - script: ${{ parameters.sourceIndexBuildCommand }}
     displayName: Build Repository
 
-  - script: $(Agent.TempDirectory)/.source-index/tools/BinLogToSln -i $(BinlogPath) -r $(Build.SourcesDirectory) -n $(Build.Repository.Name) -o .source-index/stage1output
+  - script: $(Agent.TempDirectory)/.source-index/tools/BinLogToSln -i $(BinlogPath) -r $(System.DefaultWorkingDirectory) -n $(Build.Repository.Name) -o .source-index/stage1output
     displayName: Process Binlog into indexable sln
 
   - ${{ if and(eq(parameters.runAsPublic, 'false'), ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')) }}:
diff --git a/eng/common/templates-official/jobs/codeql-build.yml b/eng/common/templates-official/jobs/codeql-build.yml
index b68d3c2f3199..f6476912a861 100644
--- a/eng/common/templates-official/jobs/codeql-build.yml
+++ b/eng/common/templates-official/jobs/codeql-build.yml
@@ -23,7 +23,7 @@ jobs:
       - name: DefaultGuardianVersion
         value: 0.109.0
       - name: GuardianPackagesConfigFile
-        value: $(Build.SourcesDirectory)\eng\common\sdl\packages.config
+        value: $(System.DefaultWorkingDirectory)\eng\common\sdl\packages.config
       - name: GuardianVersion
         value: ${{ coalesce(parameters.overrideGuardianVersion, '$(DefaultGuardianVersion)') }}
   
diff --git a/eng/common/templates-official/jobs/jobs.yml b/eng/common/templates-official/jobs/jobs.yml
index 857a0f8ba43e..03aa64e1741f 100644
--- a/eng/common/templates-official/jobs/jobs.yml
+++ b/eng/common/templates-official/jobs/jobs.yml
@@ -40,6 +40,8 @@ parameters:
 
   enableSourceIndex: false
   sourceIndexParams: {}
+  repositoryAlias: self
+  officialBuildId: ''
 
 # Internal resources (telemetry, microbuild) can only be accessed from non-public projects,
 # and some (Microbuild) should only be applied to non-PR cases for internal builds.
@@ -95,3 +97,5 @@ jobs:
         enablePublishBuildArtifacts: ${{ parameters.enablePublishBuildArtifacts }}
         artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
         signingValidationAdditionalParameters: ${{ parameters.signingValidationAdditionalParameters }}
+        repositoryAlias: ${{ parameters.repositoryAlias }}
+        officialBuildId: ${{ parameters.officialBuildId }}
diff --git a/eng/common/templates-official/jobs/source-build.yml b/eng/common/templates-official/jobs/source-build.yml
index b9247be1547b..21a346fbd6c7 100644
--- a/eng/common/templates-official/jobs/source-build.yml
+++ b/eng/common/templates-official/jobs/source-build.yml
@@ -21,6 +21,9 @@ parameters:
   # one job runs on 'defaultManagedPlatform'.
   platforms: []
 
+  # Optional list of directories to ignore for component governance scans.
+  cgIgnoreDirectories: []
+
   # If set to true and running on a non-public project,
   # Internal nuget and blob storage locations will be enabled.
   # This is not enabled by default because many repositories do not need internal sources
@@ -44,6 +47,7 @@ jobs:
     parameters:
       jobNamePrefix: ${{ parameters.jobNamePrefix }}
       platform: ${{ platform }}
+      cgIgnoreDirectories: ${{ parameters.cgIgnoreDirectories }}
       enableInternalSources: ${{ parameters.enableInternalSources }}
 
 - ${{ if eq(length(parameters.platforms), 0) }}:
@@ -51,4 +55,5 @@ jobs:
     parameters:
       jobNamePrefix: ${{ parameters.jobNamePrefix }}
       platform: ${{ parameters.defaultManagedPlatform }}
+      cgIgnoreDirectories: ${{ parameters.cgIgnoreDirectories }}
       enableInternalSources: ${{ parameters.enableInternalSources }}
diff --git a/eng/common/templates-official/post-build/post-build.yml b/eng/common/templates-official/post-build/post-build.yml
index b81b8770b346..817e2d80dea1 100644
--- a/eng/common/templates-official/post-build/post-build.yml
+++ b/eng/common/templates-official/post-build/post-build.yml
@@ -133,9 +133,8 @@ stages:
         - task: PowerShell@2
           displayName: Validate
           inputs:
-            filePath: $(Build.SourcesDirectory)/eng/common/post-build/nuget-validation.ps1
-            arguments: -PackagesPath $(Build.ArtifactStagingDirectory)/PackageArtifacts/ 
-              -ToolDestinationPath $(Agent.BuildDirectory)/Extract/ 
+            filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/nuget-validation.ps1
+            arguments: -PackagesPath $(Build.ArtifactStagingDirectory)/PackageArtifacts/
 
     - job:
       displayName: Signing Validation
@@ -186,7 +185,7 @@ stages:
             filePath: eng\common\sdk-task.ps1
             arguments: -task SigningValidation -restore -msbuildEngine vs
               /p:PackageBasePath='$(Build.ArtifactStagingDirectory)/PackageArtifacts'
-              /p:SignCheckExclusionsFile='$(Build.SourcesDirectory)/eng/SignCheckExclusionsFile.txt'
+              /p:SignCheckExclusionsFile='$(System.DefaultWorkingDirectory)/eng/SignCheckExclusionsFile.txt'
               ${{ parameters.signingValidationAdditionalParameters }}
 
         - template: ../steps/publish-logs.yml
@@ -230,7 +229,7 @@ stages:
         - task: PowerShell@2
           displayName: Validate
           inputs:
-            filePath: $(Build.SourcesDirectory)/eng/common/post-build/sourcelink-validation.ps1
+            filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/sourcelink-validation.ps1
             arguments: -InputPath $(Build.ArtifactStagingDirectory)/BlobArtifacts/ 
               -ExtractPath $(Agent.BuildDirectory)/Extract/ 
               -GHRepoName $(Build.Repository.Name) 
@@ -278,7 +277,7 @@ stages:
             azureSubscription: "Darc: Maestro Production"
             scriptType: ps
             scriptLocation: scriptPath
-            scriptPath: $(Build.SourcesDirectory)/eng/common/post-build/publish-using-darc.ps1
+            scriptPath: $(System.DefaultWorkingDirectory)/eng/common/post-build/publish-using-darc.ps1
             arguments: -BuildId $(BARBuildId) 
               -PublishingInfraVersion ${{ parameters.publishingInfraVersion }}
               -AzdoToken '$(System.AccessToken)'
diff --git a/eng/common/templates-official/post-build/trigger-subscription.yml b/eng/common/templates-official/post-build/trigger-subscription.yml
index da669030daf6..52df70774828 100644
--- a/eng/common/templates-official/post-build/trigger-subscription.yml
+++ b/eng/common/templates-official/post-build/trigger-subscription.yml
@@ -5,7 +5,7 @@ steps:
 - task: PowerShell@2
   displayName: Triggering subscriptions
   inputs:
-    filePath: $(Build.SourcesDirectory)/eng/common/post-build/trigger-subscriptions.ps1
+    filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/trigger-subscriptions.ps1
     arguments: -SourceRepo $(Build.Repository.Uri)
       -ChannelId ${{ parameters.ChannelId }}
       -MaestroApiAccessToken $(MaestroAccessToken)
diff --git a/eng/common/templates-official/steps/add-build-to-channel.yml b/eng/common/templates-official/steps/add-build-to-channel.yml
index f67a210d62f3..5b6fec257ea7 100644
--- a/eng/common/templates-official/steps/add-build-to-channel.yml
+++ b/eng/common/templates-official/steps/add-build-to-channel.yml
@@ -5,7 +5,7 @@ steps:
 - task: PowerShell@2
   displayName: Add Build to Channel
   inputs:
-    filePath: $(Build.SourcesDirectory)/eng/common/post-build/add-build-to-channel.ps1
+    filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/add-build-to-channel.ps1
     arguments: -BuildId $(BARBuildId) 
       -ChannelId ${{ parameters.ChannelId }}
       -MaestroApiAccessToken $(MaestroApiAccessToken)
diff --git a/eng/common/templates-official/steps/execute-sdl.yml b/eng/common/templates-official/steps/execute-sdl.yml
index 301d5c591ebd..d9dcd1e1cdeb 100644
--- a/eng/common/templates-official/steps/execute-sdl.yml
+++ b/eng/common/templates-official/steps/execute-sdl.yml
@@ -15,17 +15,17 @@ steps:
   
 - ${{ if ne(parameters.overrideGuardianVersion, '') }}:
   - pwsh: |
-      Set-Location -Path $(Build.SourcesDirectory)\eng\common\sdl
+      Set-Location -Path $(System.DefaultWorkingDirectory)\eng\common\sdl
       . .\sdl.ps1
-      $guardianCliLocation = Install-Gdn -Path $(Build.SourcesDirectory)\.artifacts -Version ${{ parameters.overrideGuardianVersion }}
+      $guardianCliLocation = Install-Gdn -Path $(System.DefaultWorkingDirectory)\.artifacts -Version ${{ parameters.overrideGuardianVersion }}
       Write-Host "##vso[task.setvariable variable=GuardianCliLocation]$guardianCliLocation"
     displayName: Install Guardian (Overridden)
 
 - ${{ if eq(parameters.overrideGuardianVersion, '') }}:
   - pwsh: |
-      Set-Location -Path $(Build.SourcesDirectory)\eng\common\sdl
+      Set-Location -Path $(System.DefaultWorkingDirectory)\eng\common\sdl
       . .\sdl.ps1
-      $guardianCliLocation = Install-Gdn -Path $(Build.SourcesDirectory)\.artifacts
+      $guardianCliLocation = Install-Gdn -Path $(System.DefaultWorkingDirectory)\.artifacts
       Write-Host "##vso[task.setvariable variable=GuardianCliLocation]$guardianCliLocation"
     displayName: Install Guardian
 
@@ -38,7 +38,7 @@ steps:
 - ${{ if eq(parameters.overrideParameters, '') }}:
   - powershell: ${{ parameters.executeAllSdlToolsScript }}
       -GuardianCliLocation $(GuardianCliLocation)
-      -NugetPackageDirectory $(Build.SourcesDirectory)\.packages
+      -NugetPackageDirectory $(System.DefaultWorkingDirectory)\.packages
       -AzureDevOpsAccessToken $(dn-bot-dotnet-build-rw-code-rw)
       ${{ parameters.additionalParameters }}
     displayName: Execute SDL
@@ -73,7 +73,7 @@ steps:
       flattenFolders: true
       sourceFolder:  $(Agent.BuildDirectory)/.gdn/rc/
       contents: '**/*.sarif'
-      targetFolder: $(Build.SourcesDirectory)/CodeAnalysisLogs
+      targetFolder: $(System.DefaultWorkingDirectory)/CodeAnalysisLogs
     condition: succeededOrFailed()
 
   # Use PublishBuildArtifacts because the SARIF extension only checks this case
@@ -81,6 +81,6 @@ steps:
   - task: PublishBuildArtifacts@1
     displayName: Publish SARIF files to CodeAnalysisLogs container
     inputs:
-      pathToPublish:  $(Build.SourcesDirectory)/CodeAnalysisLogs
+      pathToPublish:  $(System.DefaultWorkingDirectory)/CodeAnalysisLogs
       artifactName: CodeAnalysisLogs
     condition: succeededOrFailed()
\ No newline at end of file
diff --git a/eng/common/templates-official/steps/generate-sbom.yml b/eng/common/templates-official/steps/generate-sbom.yml
index daf0957b68d7..1536353566c7 100644
--- a/eng/common/templates-official/steps/generate-sbom.yml
+++ b/eng/common/templates-official/steps/generate-sbom.yml
@@ -6,7 +6,7 @@
 
 parameters:
   PackageVersion: 8.0.0
-  BuildDropPath: '$(Build.SourcesDirectory)/artifacts'
+  BuildDropPath: '$(System.DefaultWorkingDirectory)/artifacts'
   PackageName: '.NET'
   ManifestDirPath: $(Build.ArtifactStagingDirectory)/sbom
   IgnoreDirectories: ''
diff --git a/eng/common/templates-official/steps/publish-logs.yml b/eng/common/templates-official/steps/publish-logs.yml
index 04012fed182a..af5a40b64c4b 100644
--- a/eng/common/templates-official/steps/publish-logs.yml
+++ b/eng/common/templates-official/steps/publish-logs.yml
@@ -8,15 +8,15 @@ steps:
   inputs:
     targetType: inline
     script: |
-      New-Item -ItemType Directory $(Build.SourcesDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
-      Move-Item -Path $(Build.SourcesDirectory)/artifacts/log/Debug/* $(Build.SourcesDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
+      New-Item -ItemType Directory $(System.DefaultWorkingDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
+      Move-Item -Path $(System.DefaultWorkingDirectory)/artifacts/log/Debug/* $(System.DefaultWorkingDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
   continueOnError: true
   condition: always()
 
 - task: 1ES.PublishBuildArtifacts@1
   displayName: Publish Logs
   inputs:
-    PathtoPublish: '$(Build.SourcesDirectory)/PostBuildLogs'
+    PathtoPublish: '$(System.DefaultWorkingDirectory)/PostBuildLogs'
     PublishLocation: Container
     ArtifactName: PostBuildLogs
   continueOnError: true
diff --git a/eng/common/templates-official/steps/source-build.yml b/eng/common/templates-official/steps/source-build.yml
index 829f17c34d11..b63043da4b9f 100644
--- a/eng/common/templates-official/steps/source-build.yml
+++ b/eng/common/templates-official/steps/source-build.yml
@@ -12,6 +12,9 @@ parameters:
   # the usage of the properties on this object is split between the 'job' and 'steps' templates.
   platform: {}
 
+  # Optional list of directories to ignore for component governance scans.
+  cgIgnoreDirectories: []
+
 steps:
 # Build. Keep it self-contained for simple reusability. (No source-build-specific job variables.)
 - script: |
@@ -26,8 +29,8 @@ steps:
     internalRestoreArgs=
     if [ '$(dn-bot-dnceng-artifact-feeds-rw)' != '$''(dn-bot-dnceng-artifact-feeds-rw)' ]; then
       # Temporarily work around https://github.com/dotnet/arcade/issues/7709
-      chmod +x $(Build.SourcesDirectory)/eng/common/SetupNugetSources.sh
-      $(Build.SourcesDirectory)/eng/common/SetupNugetSources.sh $(Build.SourcesDirectory)/NuGet.config $(dn-bot-dnceng-artifact-feeds-rw)
+      chmod +x $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.sh
+      $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.sh $(System.DefaultWorkingDirectory)/NuGet.config $(dn-bot-dnceng-artifact-feeds-rw)
       internalRestoreArgs='/p:CopyWipIntoInnerSourceBuildRepo=true'
 
       # The 'Copy WIP' feature of source build uses git stash to apply changes from the original repo.
@@ -101,7 +104,7 @@ steps:
 - task: CopyFiles@2
   displayName: Prepare BuildLogs staging directory
   inputs:
-    SourceFolder: '$(Build.SourcesDirectory)'
+    SourceFolder: '$(System.DefaultWorkingDirectory)'
     Contents: |
       **/*.log
       **/*.binlog
@@ -126,4 +129,7 @@ steps:
 - task: ComponentGovernanceComponentDetection@0
   displayName: Component Detection (Exclude upstream cache)
   inputs:
-    ignoreDirectories: '$(Build.SourcesDirectory)/artifacts/source-build/self/src/artifacts/obj/source-built-upstream-cache'
+    ${{ if eq(length(parameters.cgIgnoreDirectories), 0) }}:
+      ignoreDirectories: '$(System.DefaultWorkingDirectory)/artifacts/source-build/self/src/artifacts/obj/source-built-upstream-cache'
+    ${{ else }}:
+      ignoreDirectories: ${{ join(',', parameters.cgIgnoreDirectories) }}
diff --git a/eng/common/templates-official/variables/sdl-variables.yml b/eng/common/templates-official/variables/sdl-variables.yml
index dbdd66d4a4b3..f1311bbb1b33 100644
--- a/eng/common/templates-official/variables/sdl-variables.yml
+++ b/eng/common/templates-official/variables/sdl-variables.yml
@@ -4,4 +4,4 @@ variables:
 - name: DefaultGuardianVersion
   value: 0.109.0
 - name: GuardianPackagesConfigFile
-  value: $(Build.SourcesDirectory)\eng\common\sdl\packages.config
\ No newline at end of file
+  value: $(System.DefaultWorkingDirectory)\eng\common\sdl\packages.config
\ No newline at end of file
diff --git a/eng/common/templates/job/job.yml b/eng/common/templates/job/job.yml
index 2856f7de1061..80454d5a5587 100644
--- a/eng/common/templates/job/job.yml
+++ b/eng/common/templates/job/job.yml
@@ -37,7 +37,7 @@ parameters:
 # Sbom related params
   enableSbom: true
   PackageVersion: 7.0.0
-  BuildDropPath: '$(Build.SourcesDirectory)/artifacts'
+  BuildDropPath: '$(System.DefaultWorkingDirectory)/artifacts'
 
 jobs:
 - job: ${{ parameters.name }}
@@ -163,7 +163,7 @@ jobs:
       inputs:
         languages: ${{ coalesce(parameters.richCodeNavigationLanguage, 'csharp') }}
         environment: ${{ coalesce(parameters.richCodeNavigationEnvironment, 'production') }}
-        richNavLogOutputDirectory: $(Build.SourcesDirectory)/artifacts/bin
+        richNavLogOutputDirectory: $(System.DefaultWorkingDirectory)/artifacts/bin
         uploadRichNavArtifacts: ${{ coalesce(parameters.richCodeNavigationUploadArtifacts, false) }}
       continueOnError: true
 
@@ -220,7 +220,7 @@ jobs:
     - task: PublishBuildArtifacts@1
       displayName: Publish Logs
       inputs:
-        PathtoPublish: '$(Build.SourcesDirectory)/artifacts/log/$(_BuildConfig)'
+        PathtoPublish: '$(System.DefaultWorkingDirectory)/artifacts/log/$(_BuildConfig)'
         PublishLocation: Container
         ArtifactName: ${{ coalesce(parameters.enablePublishBuildArtifacts.artifactName, '$(Agent.Os)_$(Agent.JobName)' ) }}
       continueOnError: true
@@ -232,7 +232,7 @@ jobs:
       inputs:
         testResultsFormat: 'xUnit'
         testResultsFiles: '*.xml'
-        searchFolder: '$(Build.SourcesDirectory)/artifacts/TestResults/$(_BuildConfig)'
+        searchFolder: '$(System.DefaultWorkingDirectory)/artifacts/TestResults/$(_BuildConfig)'
         testRunTitle: ${{ coalesce(parameters.testRunTitle, parameters.name, '$(System.JobName)') }}-xunit
         mergeTestResults: ${{ parameters.mergeTestResults }}
       continueOnError: true
@@ -243,7 +243,7 @@ jobs:
       inputs:
         testResultsFormat: 'VSTest'
         testResultsFiles: '*.trx'
-        searchFolder: '$(Build.SourcesDirectory)/artifacts/TestResults/$(_BuildConfig)'
+        searchFolder: '$(System.DefaultWorkingDirectory)/artifacts/TestResults/$(_BuildConfig)'
         testRunTitle: ${{ coalesce(parameters.testRunTitle, parameters.name, '$(System.JobName)') }}-trx
         mergeTestResults: ${{ parameters.mergeTestResults }}
       continueOnError: true
@@ -257,7 +257,7 @@ jobs:
         IgnoreDirectories: ${{ parameters.componentGovernanceIgnoreDirectories }}
 
   - ${{ if eq(parameters.enableBuildRetry, 'true') }}:
-    - publish: $(Build.SourcesDirectory)\eng\common\BuildConfiguration
+    - publish: $(System.DefaultWorkingDirectory)\eng\common\BuildConfiguration
       artifact: BuildConfiguration
       displayName: Publish build retry configuration
       continueOnError: true
diff --git a/eng/common/templates/job/onelocbuild.yml b/eng/common/templates/job/onelocbuild.yml
index 60ab00c4de3a..2cd3840c9927 100644
--- a/eng/common/templates/job/onelocbuild.yml
+++ b/eng/common/templates/job/onelocbuild.yml
@@ -8,7 +8,7 @@ parameters:
   CeapexPat: $(dn-bot-ceapex-package-r) # PAT for the loc AzDO instance https://dev.azure.com/ceapex
   GithubPat: $(BotAccount-dotnet-bot-repo-PAT)
 
-  SourcesDirectory: $(Build.SourcesDirectory)
+  SourcesDirectory: $(System.DefaultWorkingDirectory)
   CreatePr: true
   AutoCompletePr: false
   ReusePr: true
@@ -60,7 +60,7 @@ jobs:
     - ${{ if ne(parameters.SkipLocProjectJsonGeneration, 'true') }}:
       - task: Powershell@2
         inputs:
-          filePath: $(Build.SourcesDirectory)/eng/common/generate-locproject.ps1
+          filePath: $(System.DefaultWorkingDirectory)/eng/common/generate-locproject.ps1
           arguments: $(_GenerateLocProjectArguments)
         displayName: Generate LocProject.json
         condition: ${{ parameters.condition }}
@@ -103,7 +103,7 @@ jobs:
     - task: PublishBuildArtifacts@1
       displayName: Publish LocProject.json
       inputs:
-        PathtoPublish: '$(Build.SourcesDirectory)/eng/Localize/'
+        PathtoPublish: '$(System.DefaultWorkingDirectory)/eng/Localize/'
         PublishLocation: Container
         ArtifactName: Loc
       condition: ${{ parameters.condition }}
\ No newline at end of file
diff --git a/eng/common/templates/job/publish-build-assets.yml b/eng/common/templates/job/publish-build-assets.yml
index cc2b346ba8ba..1fcdcc9adc34 100644
--- a/eng/common/templates/job/publish-build-assets.yml
+++ b/eng/common/templates/job/publish-build-assets.yml
@@ -30,6 +30,10 @@ parameters:
 
   signingValidationAdditionalParameters: ''
 
+  repositoryAlias: self
+
+  officialBuildId: ''
+
 jobs:
 - job: Asset_Registry_Publish
 
@@ -50,6 +54,11 @@ jobs:
       value: false
     - ${{ if eq(parameters.publishAssetsImmediately, 'true') }}:
       - template: /eng/common/templates/post-build/common-variables.yml
+  - name: OfficialBuildId
+    ${{ if ne(parameters.officialBuildId, '') }}:
+      value: ${{ parameters.officialBuildId }}
+    ${{ else }}:
+      value: $(Build.BuildNumber)
 
   pool:
     # We don't use the collection uri here because it might vary (.visualstudio.com vs. dev.azure.com)
@@ -63,6 +72,9 @@ jobs:
 
   steps:
   - ${{ if and(eq(parameters.runAsPublic, 'false'), ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')) }}:
+    - checkout: ${{ parameters.repositoryAlias }}
+      fetchDepth: 3
+      clean: true
     - task: DownloadBuildArtifacts@0
       displayName: Download artifact
       inputs:
@@ -80,13 +92,13 @@ jobs:
         azureSubscription: "Darc: Maestro Production"
         scriptType: ps
         scriptLocation: scriptPath
-        scriptPath: $(Build.SourcesDirectory)/eng/common/sdk-task.ps1
+        scriptPath: $(System.DefaultWorkingDirectory)/eng/common/sdk-task.ps1
         arguments: >
           -task PublishBuildAssets -restore -msbuildEngine dotnet
           /p:ManifestsPath='$(Build.StagingDirectory)/Download/AssetManifests'
           /p:MaestroApiEndpoint=https://maestro.dot.net
           /p:PublishUsingPipelines=${{ parameters.publishUsingPipelines }}
-          /p:OfficialBuildId=$(Build.BuildNumber)
+          /p:OfficialBuildId=$(OfficialBuildId)
       condition: ${{ parameters.condition }}
       continueOnError: ${{ parameters.continueOnError }}
 
@@ -111,7 +123,7 @@ jobs:
       inputs:
         targetType: inline
         script: |
-          $symbolExclusionfile = "$(Build.SourcesDirectory)/eng/SymbolPublishingExclusionsFile.txt"
+          $symbolExclusionfile = "$(System.DefaultWorkingDirectory)/eng/SymbolPublishingExclusionsFile.txt"
           if(Test-Path -Path $symbolExclusionfile)
           {
             Write-Host "SymbolExclusionFile exists"
@@ -126,7 +138,7 @@ jobs:
       displayName: Publish SymbolPublishingExclusionsFile Artifact
       condition: eq(variables['SymbolExclusionFile'], 'true')
       inputs:
-        PathtoPublish: '$(Build.SourcesDirectory)/eng/SymbolPublishingExclusionsFile.txt'
+        PathtoPublish: '$(System.DefaultWorkingDirectory)/eng/SymbolPublishingExclusionsFile.txt'
         PublishLocation: Container
         ArtifactName: ReleaseConfigs
 
@@ -142,7 +154,7 @@ jobs:
           azureSubscription: "Darc: Maestro Production"
           scriptType: ps
           scriptLocation: scriptPath
-          scriptPath: $(Build.SourcesDirectory)/eng/common/post-build/publish-using-darc.ps1
+          scriptPath: $(System.DefaultWorkingDirectory)/eng/common/post-build/publish-using-darc.ps1
           arguments: -BuildId $(BARBuildId) 
             -PublishingInfraVersion 3
             -AzdoToken '$(System.AccessToken)'
diff --git a/eng/common/templates/job/source-build.yml b/eng/common/templates/job/source-build.yml
index c48f95d93d91..97021335cfc4 100644
--- a/eng/common/templates/job/source-build.yml
+++ b/eng/common/templates/job/source-build.yml
@@ -31,6 +31,9 @@ parameters:
   #   container and pool.
   platform: {}
 
+  # Optional list of directories to ignore for component governance scans.
+  cgIgnoreDirectories: []
+
   # If set to true and running on a non-public project,
   # Internal blob storage locations will be enabled.
   # This is not enabled by default because many repositories do not need internal sources
@@ -72,3 +75,4 @@ jobs:
   - template: /eng/common/templates/steps/source-build.yml
     parameters:
       platform: ${{ parameters.platform }}
+      cgIgnoreDirectories: ${{ parameters.cgIgnoreDirectories }}
diff --git a/eng/common/templates/job/source-index-stage1.yml b/eng/common/templates/job/source-index-stage1.yml
index 8538f44bab28..81606fd9a541 100644
--- a/eng/common/templates/job/source-index-stage1.yml
+++ b/eng/common/templates/job/source-index-stage1.yml
@@ -58,7 +58,7 @@ jobs:
   - script: ${{ parameters.sourceIndexBuildCommand }}
     displayName: Build Repository
 
-  - script: $(Agent.TempDirectory)/.source-index/tools/BinLogToSln -i $(BinlogPath) -r $(Build.SourcesDirectory) -n $(Build.Repository.Name) -o .source-index/stage1output
+  - script: $(Agent.TempDirectory)/.source-index/tools/BinLogToSln -i $(BinlogPath) -r $(System.DefaultWorkingDirectory) -n $(Build.Repository.Name) -o .source-index/stage1output
     displayName: Process Binlog into indexable sln
 
   - ${{ if and(eq(parameters.runAsPublic, 'false'), ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')) }}:
diff --git a/eng/common/templates/jobs/codeql-build.yml b/eng/common/templates/jobs/codeql-build.yml
index f7dc5ea4aaa6..e8b43e3b4cba 100644
--- a/eng/common/templates/jobs/codeql-build.yml
+++ b/eng/common/templates/jobs/codeql-build.yml
@@ -23,7 +23,7 @@ jobs:
       - name: DefaultGuardianVersion
         value: 0.109.0
       - name: GuardianPackagesConfigFile
-        value: $(Build.SourcesDirectory)\eng\common\sdl\packages.config
+        value: $(System.DefaultWorkingDirectory)\eng\common\sdl\packages.config
       - name: GuardianVersion
         value: ${{ coalesce(parameters.overrideGuardianVersion, '$(DefaultGuardianVersion)') }}
   
diff --git a/eng/common/templates/jobs/jobs.yml b/eng/common/templates/jobs/jobs.yml
index 289bb2396ce8..7eafc256758f 100644
--- a/eng/common/templates/jobs/jobs.yml
+++ b/eng/common/templates/jobs/jobs.yml
@@ -40,6 +40,8 @@ parameters:
 
   enableSourceIndex: false
   sourceIndexParams: {}
+  repositoryAlias: self
+  officialBuildId: ''
 
 # Internal resources (telemetry, microbuild) can only be accessed from non-public projects,
 # and some (Microbuild) should only be applied to non-PR cases for internal builds.
@@ -95,3 +97,5 @@ jobs:
         enablePublishBuildArtifacts: ${{ parameters.enablePublishBuildArtifacts }}
         artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
         signingValidationAdditionalParameters: ${{ parameters.signingValidationAdditionalParameters }}
+        repositoryAlias: ${{ parameters.repositoryAlias }}
+        officialBuildId: ${{ parameters.officialBuildId }}
diff --git a/eng/common/templates/jobs/source-build.yml b/eng/common/templates/jobs/source-build.yml
index 3ec997108107..4dde599add97 100644
--- a/eng/common/templates/jobs/source-build.yml
+++ b/eng/common/templates/jobs/source-build.yml
@@ -21,6 +21,9 @@ parameters:
   # one job runs on 'defaultManagedPlatform'.
   platforms: []
 
+  # Optional list of directories to ignore for component governance scans.
+  cgIgnoreDirectories: []
+
   # If set to true and running on a non-public project,
   # Internal nuget and blob storage locations will be enabled.
   # This is not enabled by default because many repositories do not need internal sources
@@ -44,6 +47,7 @@ jobs:
     parameters:
       jobNamePrefix: ${{ parameters.jobNamePrefix }}
       platform: ${{ platform }}
+      cgIgnoreDirectories: ${{ parameters.cgIgnoreDirectories }}
       enableInternalSources: ${{ parameters.enableInternalSources }}
 
 - ${{ if eq(length(parameters.platforms), 0) }}:
@@ -51,4 +55,5 @@ jobs:
     parameters:
       jobNamePrefix: ${{ parameters.jobNamePrefix }}
       platform: ${{ parameters.defaultManagedPlatform }}
+      cgIgnoreDirectories: ${{ parameters.cgIgnoreDirectories }}
       enableInternalSources: ${{ parameters.enableInternalSources }}
diff --git a/eng/common/templates/post-build/post-build.yml b/eng/common/templates/post-build/post-build.yml
index c3b6a3012fee..ea1785a8aa26 100644
--- a/eng/common/templates/post-build/post-build.yml
+++ b/eng/common/templates/post-build/post-build.yml
@@ -130,9 +130,8 @@ stages:
         - task: PowerShell@2
           displayName: Validate
           inputs:
-            filePath: $(Build.SourcesDirectory)/eng/common/post-build/nuget-validation.ps1
+            filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/nuget-validation.ps1
             arguments: -PackagesPath $(Build.ArtifactStagingDirectory)/PackageArtifacts/
-              -ToolDestinationPath $(Agent.BuildDirectory)/Extract/
 
     - job:
       displayName: Signing Validation
@@ -180,7 +179,7 @@ stages:
             filePath: eng\common\sdk-task.ps1
             arguments: -task SigningValidation -restore -msbuildEngine vs
               /p:PackageBasePath='$(Build.ArtifactStagingDirectory)/PackageArtifacts'
-              /p:SignCheckExclusionsFile='$(Build.SourcesDirectory)/eng/SignCheckExclusionsFile.txt'
+              /p:SignCheckExclusionsFile='$(System.DefaultWorkingDirectory)/eng/SignCheckExclusionsFile.txt'
               ${{ parameters.signingValidationAdditionalParameters }}
 
         - template: ../steps/publish-logs.yml
@@ -220,7 +219,7 @@ stages:
         - task: PowerShell@2
           displayName: Validate
           inputs:
-            filePath: $(Build.SourcesDirectory)/eng/common/post-build/sourcelink-validation.ps1
+            filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/sourcelink-validation.ps1
             arguments: -InputPath $(Build.ArtifactStagingDirectory)/BlobArtifacts/
               -ExtractPath $(Agent.BuildDirectory)/Extract/
               -GHRepoName $(Build.Repository.Name)
@@ -274,7 +273,7 @@ stages:
             azureSubscription: "Darc: Maestro Production"
             scriptType: ps
             scriptLocation: scriptPath
-            scriptPath: $(Build.SourcesDirectory)/eng/common/post-build/publish-using-darc.ps1
+            scriptPath: $(System.DefaultWorkingDirectory)/eng/common/post-build/publish-using-darc.ps1
             arguments: -BuildId $(BARBuildId)
               -PublishingInfraVersion ${{ parameters.publishingInfraVersion }}
               -AzdoToken '$(System.AccessToken)'
diff --git a/eng/common/templates/post-build/setup-maestro-vars.yml b/eng/common/templates/post-build/setup-maestro-vars.yml
index 64b9abc68504..4347fa80b684 100644
--- a/eng/common/templates/post-build/setup-maestro-vars.yml
+++ b/eng/common/templates/post-build/setup-maestro-vars.yml
@@ -32,7 +32,7 @@ steps:
             $AzureDevOpsBuildId = $Env:Build_BuildId
           }
           else {
-            . $(Build.SourcesDirectory)\eng\common\tools.ps1
+            . $(System.DefaultWorkingDirectory)\eng\common\tools.ps1
             $darc = Get-Darc
             $buildInfo = & $darc get-build `
               --id ${{ parameters.BARBuildId }} `
diff --git a/eng/common/templates/post-build/trigger-subscription.yml b/eng/common/templates/post-build/trigger-subscription.yml
index da669030daf6..52df70774828 100644
--- a/eng/common/templates/post-build/trigger-subscription.yml
+++ b/eng/common/templates/post-build/trigger-subscription.yml
@@ -5,7 +5,7 @@ steps:
 - task: PowerShell@2
   displayName: Triggering subscriptions
   inputs:
-    filePath: $(Build.SourcesDirectory)/eng/common/post-build/trigger-subscriptions.ps1
+    filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/trigger-subscriptions.ps1
     arguments: -SourceRepo $(Build.Repository.Uri)
       -ChannelId ${{ parameters.ChannelId }}
       -MaestroApiAccessToken $(MaestroAccessToken)
diff --git a/eng/common/templates/steps/add-build-to-channel.yml b/eng/common/templates/steps/add-build-to-channel.yml
index f67a210d62f3..5b6fec257ea7 100644
--- a/eng/common/templates/steps/add-build-to-channel.yml
+++ b/eng/common/templates/steps/add-build-to-channel.yml
@@ -5,7 +5,7 @@ steps:
 - task: PowerShell@2
   displayName: Add Build to Channel
   inputs:
-    filePath: $(Build.SourcesDirectory)/eng/common/post-build/add-build-to-channel.ps1
+    filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/add-build-to-channel.ps1
     arguments: -BuildId $(BARBuildId) 
       -ChannelId ${{ parameters.ChannelId }}
       -MaestroApiAccessToken $(MaestroApiAccessToken)
diff --git a/eng/common/templates/steps/execute-sdl.yml b/eng/common/templates/steps/execute-sdl.yml
index fe0ebf8c904e..047e8281ebc0 100644
--- a/eng/common/templates/steps/execute-sdl.yml
+++ b/eng/common/templates/steps/execute-sdl.yml
@@ -15,17 +15,17 @@ steps:
   
 - ${{ if ne(parameters.overrideGuardianVersion, '') }}:
   - pwsh: |
-      Set-Location -Path $(Build.SourcesDirectory)\eng\common\sdl
+      Set-Location -Path $(System.DefaultWorkingDirectory)\eng\common\sdl
       . .\sdl.ps1
-      $guardianCliLocation = Install-Gdn -Path $(Build.SourcesDirectory)\.artifacts -Version ${{ parameters.overrideGuardianVersion }}
+      $guardianCliLocation = Install-Gdn -Path $(System.DefaultWorkingDirectory)\.artifacts -Version ${{ parameters.overrideGuardianVersion }}
       Write-Host "##vso[task.setvariable variable=GuardianCliLocation]$guardianCliLocation"
     displayName: Install Guardian (Overridden)
 
 - ${{ if eq(parameters.overrideGuardianVersion, '') }}:
   - pwsh: |
-      Set-Location -Path $(Build.SourcesDirectory)\eng\common\sdl
+      Set-Location -Path $(System.DefaultWorkingDirectory)\eng\common\sdl
       . .\sdl.ps1
-      $guardianCliLocation = Install-Gdn -Path $(Build.SourcesDirectory)\.artifacts
+      $guardianCliLocation = Install-Gdn -Path $(System.DefaultWorkingDirectory)\.artifacts
       Write-Host "##vso[task.setvariable variable=GuardianCliLocation]$guardianCliLocation"
     displayName: Install Guardian
 
@@ -40,7 +40,7 @@ steps:
 - ${{ if eq(parameters.overrideParameters, '') }}:
   - powershell: ${{ parameters.executeAllSdlToolsScript }}
       -GuardianCliLocation $(GuardianCliLocation)
-      -NugetPackageDirectory $(Build.SourcesDirectory)\.packages
+      -NugetPackageDirectory $(System.DefaultWorkingDirectory)\.packages
       ${{ parameters.additionalParameters }}
     displayName: Execute SDL
     continueOnError: ${{ parameters.sdlContinueOnError }}
@@ -76,7 +76,7 @@ steps:
       flattenFolders: true
       sourceFolder:  $(Agent.BuildDirectory)/.gdn/rc/
       contents: '**/*.sarif'
-      targetFolder: $(Build.SourcesDirectory)/CodeAnalysisLogs
+      targetFolder: $(System.DefaultWorkingDirectory)/CodeAnalysisLogs
     condition: succeededOrFailed()
 
   # Use PublishBuildArtifacts because the SARIF extension only checks this case
@@ -84,6 +84,6 @@ steps:
   - task: PublishBuildArtifacts@1
     displayName: Publish SARIF files to CodeAnalysisLogs container
     inputs:
-      pathToPublish:  $(Build.SourcesDirectory)/CodeAnalysisLogs
+      pathToPublish:  $(System.DefaultWorkingDirectory)/CodeAnalysisLogs
       artifactName: CodeAnalysisLogs
     condition: succeededOrFailed()
\ No newline at end of file
diff --git a/eng/common/templates/steps/generate-sbom.yml b/eng/common/templates/steps/generate-sbom.yml
index 2b21eae42732..b1fe8b3944b3 100644
--- a/eng/common/templates/steps/generate-sbom.yml
+++ b/eng/common/templates/steps/generate-sbom.yml
@@ -6,7 +6,7 @@
 
 parameters:
   PackageVersion: 8.0.0
-  BuildDropPath: '$(Build.SourcesDirectory)/artifacts'
+  BuildDropPath: '$(System.DefaultWorkingDirectory)/artifacts'
   PackageName: '.NET'
   ManifestDirPath: $(Build.ArtifactStagingDirectory)/sbom
   IgnoreDirectories: ''
diff --git a/eng/common/templates/steps/publish-logs.yml b/eng/common/templates/steps/publish-logs.yml
index 88f238f36bfd..e2f8413d8e19 100644
--- a/eng/common/templates/steps/publish-logs.yml
+++ b/eng/common/templates/steps/publish-logs.yml
@@ -8,15 +8,15 @@ steps:
   inputs:
     targetType: inline
     script: |
-      New-Item -ItemType Directory $(Build.SourcesDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
-      Move-Item -Path $(Build.SourcesDirectory)/artifacts/log/Debug/* $(Build.SourcesDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
+      New-Item -ItemType Directory $(System.DefaultWorkingDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
+      Move-Item -Path $(System.DefaultWorkingDirectory)/artifacts/log/Debug/* $(System.DefaultWorkingDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
   continueOnError: true
   condition: always()
 
 - task: PublishBuildArtifacts@1
   displayName: Publish Logs
   inputs:
-    PathtoPublish: '$(Build.SourcesDirectory)/PostBuildLogs'
+    PathtoPublish: '$(System.DefaultWorkingDirectory)/PostBuildLogs'
     PublishLocation: Container
     ArtifactName: PostBuildLogs
   continueOnError: true
diff --git a/eng/common/templates/steps/source-build.yml b/eng/common/templates/steps/source-build.yml
index 41bbb915736a..ae06b26ea373 100644
--- a/eng/common/templates/steps/source-build.yml
+++ b/eng/common/templates/steps/source-build.yml
@@ -12,6 +12,9 @@ parameters:
   # the usage of the properties on this object is split between the 'job' and 'steps' templates.
   platform: {}
 
+  # Optional list of directories to ignore for component governance scans.
+  cgIgnoreDirectories: []
+
 steps:
 # Build. Keep it self-contained for simple reusability. (No source-build-specific job variables.)
 - script: |
@@ -26,8 +29,8 @@ steps:
     internalRestoreArgs=
     if [ '$(dn-bot-dnceng-artifact-feeds-rw)' != '$''(dn-bot-dnceng-artifact-feeds-rw)' ]; then
       # Temporarily work around https://github.com/dotnet/arcade/issues/7709
-      chmod +x $(Build.SourcesDirectory)/eng/common/SetupNugetSources.sh
-      $(Build.SourcesDirectory)/eng/common/SetupNugetSources.sh $(Build.SourcesDirectory)/NuGet.config $(dn-bot-dnceng-artifact-feeds-rw)
+      chmod +x $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.sh
+      $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.sh $(System.DefaultWorkingDirectory)/NuGet.config $(dn-bot-dnceng-artifact-feeds-rw)
       internalRestoreArgs='/p:CopyWipIntoInnerSourceBuildRepo=true'
 
       # The 'Copy WIP' feature of source build uses git stash to apply changes from the original repo.
@@ -101,7 +104,7 @@ steps:
 - task: CopyFiles@2
   displayName: Prepare BuildLogs staging directory
   inputs:
-    SourceFolder: '$(Build.SourcesDirectory)'
+    SourceFolder: '$(System.DefaultWorkingDirectory)'
     Contents: |
       **/*.log
       **/*.binlog
@@ -126,4 +129,7 @@ steps:
 - task: ComponentGovernanceComponentDetection@0
   displayName: Component Detection (Exclude upstream cache)
   inputs:
-    ignoreDirectories: '$(Build.SourcesDirectory)/artifacts/source-build/self/src/artifacts/obj/source-built-upstream-cache'
+    ${{ if eq(length(parameters.cgIgnoreDirectories), 0) }}:
+      ignoreDirectories: '$(System.DefaultWorkingDirectory)/artifacts/source-build/self/src/artifacts/obj/source-built-upstream-cache'
+    ${{ else }}:
+      ignoreDirectories: ${{ join(',', parameters.cgIgnoreDirectories) }}
diff --git a/eng/common/templates/variables/sdl-variables.yml b/eng/common/templates/variables/sdl-variables.yml
index dbdd66d4a4b3..f1311bbb1b33 100644
--- a/eng/common/templates/variables/sdl-variables.yml
+++ b/eng/common/templates/variables/sdl-variables.yml
@@ -4,4 +4,4 @@ variables:
 - name: DefaultGuardianVersion
   value: 0.109.0
 - name: GuardianPackagesConfigFile
-  value: $(Build.SourcesDirectory)\eng\common\sdl\packages.config
\ No newline at end of file
+  value: $(System.DefaultWorkingDirectory)\eng\common\sdl\packages.config
\ No newline at end of file
diff --git a/global.json b/global.json
index 85dca8c801cd..b8461e46e871 100644
--- a/global.json
+++ b/global.json
@@ -25,8 +25,8 @@
   },
   "msbuild-sdks": {
     "Yarn.MSBuild": "1.22.19",
-    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.25407.1",
-    "Microsoft.DotNet.Helix.Sdk": "8.0.0-beta.25407.1"
+    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.25504.1",
+    "Microsoft.DotNet.Helix.Sdk": "8.0.0-beta.25504.1"
   },
   "native-tools": {
     "jdk": "latest"