Do you want to run a workflow after a git push on a repository BUT your CDS instance isn’t accessible from the internet? This kind of hook is for you. (If your CDS instance is accessible from the internet please check the Git Repository Webhook).
This kind of hook will poll periodically the GitHub API to know the push and pull-request events on your repository.
You have to:
For now, only GitHub are supported for git poller by CDS.