title: Can I use service hooks to reject pushes to an Azure DevOps reopsitory?
body: <p>Apparently, <a href="https://stackoverflow.com/questions/44296831/how-to-apply-server-side-hooks-in-tfs-git-repositories">server-side git hooks are not supported on Azure Devops repositories</a>.  </p>
  
  <p>Is there any way to use external services to reject/approve pushes into my repository according to my own custom criteria?</p>