Re: [PATCH] add post-fetch hook

Jakub Narebski [off-list ref] writes:

One thing that needs to be specified is what should happen if the hook
changes "the refname at the remote" part...

Hmm, good eyes.

The mechanism is to allow the hook to rewrite what happened during the
fetch. If we decided refs/heads/master on the remote that points at the
commit $X should update refs/remotes/origin/master, we tell that to the
hook, and the hook reads it. The hook may tell us to pretend that we
fetched refs/heads/next on the remote that points at the commit $Y should
update refs/remotes/origin/pu. In FETCH_HEAD we leave where the commit was
fetched from and hook will affect that information (which is used in the
resulting merge commit log message), but otherwise I do not think anything
unexpected would happen, as tracking refs do not record where the stuff
came from (perhaps they are in reflog? I didn't check).