feat: 🔧 warning log when cloning wiki fails

Scenarios where wiki is enabled in repository settings but no wiki is created leads to failure and stops the backup process. Instead log as warning with instructions to disable wiki from repository settings if not required.

pkg/sync/sync.go

@@ -56,7 +56,11 @@ func SyncWiki(repoOwner, repoName string, config config.Config) {
 
 		cmd := exec.Command("git", "clone", repoWikiURL, repoWikiPath)
 		if err := cmd.Run(); err != nil {
-			logger.Fatalf("Error cloning wiki %s: %v\n", repoFullName, err)
+			// Do not fail if wiki does not exist, it can be possible that the repo does not have a wiki
+			// but in the repository settings wiki have been enabled
+			// Log as warning instead of error, so that it does not fail the whole process
+			logger.Warnf("Error cloning wiki %s: %v\n", repoFullName, err)
+			logger.Warnf("It is possible that the repository %s does not have a wiki created. In such case, go to your repository settings and disable the wiki if its not being used.", repoFullName)
 		} else {
 			logger.Info("Cloned wiki: ", repoFullName)
 		}
@@ -65,7 +69,7 @@ func SyncWiki(repoOwner, repoName string, config config.Config) {
 
 		cmd := exec.Command("git", "-C", repoWikiPath, "pull", "--prune", "origin")
 		if err := cmd.Run(); err != nil {
-			logger.Fatalf("Error updating wiki %s: %v\n", repoFullName, err)
+			logger.Warnf("Error updating wiki %s: %v\n", repoFullName, err)
 		} else {
 			logger.Info("Updated wiki: ", repoFullName)
 		}