Azure DevOps - Validate that build branch is not behind master

validate-branch.yml

steps:
- task: PowerShell@2
  displayName: Validate - Build branch is not behind master
  condition: or(eq(variables['Build.SourceBranchName'], 'develop'),startsWith(variables['Build.SourceBranchName'], 'release-'),startsWith(variables['Build.SourceBranchName'], 'bugfix-'),startsWith(variables['Build.SourceBranchName'], 'hotfix-'))
  inputs:
    targetType: 'inline'
    failOnStderr: true
    script: |
      $Uri = "$(System.TeamFoundationCollectionUri)$(System.TeamProject)/_apis/git/repositories/$(Build.Repository.ID)/stats/branches?name=$(Build.SourceBranchName)&api-version=6.0"

      Write-Host $Uri
      
      $Response = Invoke-RestMethod -Uri $Uri -Method Get -Headers @{ Authorization = "Bearer $(System.AccessToken)" }

      Write-Host $Response

      $BehindCount = $Response.behindCount

      if($BehindCount -eq 0) {
          Write-Host Validation Passed
      } else {
          Write-Error -Message "Your $(Build.SourceBranchName) is $BehindCount commits behind of the default branch in your repository" -ErrorAction Stop
      }