Add buildId to the branch name (#24680)

* Add timestamp for new branch

* Add timestamp for new branch

* Add buildId for new branch

Author: wyunchi-ms

.azure-pipelines/refresh-autorest.yml

@@ -144,9 +144,10 @@ jobs:
           Write-Host "##[endgroup]"
           Write-Host
         }
+        $buildId = $(Build.BuildId)
 
         Set-Location ..
-        git checkout -b 'codegen/${{ parameters.scope }}' 'origin/${{ parameters.targetBranch }}'
+        git checkout -b "codegen/${{ parameters.scope }}-$buildId" 'origin/${{ parameters.targetBranch }}'
 
   - task: PowerShell@2
     displayName: Migrate from generation to target branch
@@ -189,7 +190,8 @@ jobs:
       targetType: inline
       script: |
         $sourceBranch = '$(Build.SourceBranch)'.Replace("refs/heads/", "")
-        $headBranch = 'codegen/${{ parameters.scope }}'
+        $buildId = $(Build.BuildId)
+        $headBranch = "codegen/${{ parameters.scope }}-$buildId"
         $baseBranch = '${{ parameters.targetBranch }}'
         git config user.email "[email protected]"
         git config user.name "azure-powershell-bot"