Merge pull request github#16745 from github/hidden-docs-alt-followup

Early Access v2 followup

Author: sarahs

script/early-access/clone-for-build.js

@@ -12,7 +12,7 @@ require('dotenv').config()
 const {
   DOCUBOT_REPO_PAT,
   HEROKU_PRODUCTION_APP,
-  GIT_BRANCH
+  GIT_BRANCH // Set by the deployer with the name of the docs-internal branch
 } = process.env
 
 // Exit if PAT is not found