NAME
push-notify - Run after "git push" completes, i.e., within post-write.
SYNOPSIS
hooks/push-notify <BRANCH> [ <BRANCH> ... ]
DESCRIPTION
Releases push-notification sleeper after an update has been pushed.
The updated branches are required to be passed via command-line arguments. So if you run this hook from post-update, you'd need to store the branches from the pre-receive hook and pass them from the post-update hook somehow.
Or if this is run from hooks/post-write then it will provide the branches.