Re: [QUESTION] Tracking HEAD changes?

On Mon, Feb 22, 2021 at 07:38:30PM -0500, Jeff King wrote:

On Mon, Feb 22, 2021 at 11:12:11AM +0200, Yaron Wittenstein wrote:

quoted

Is there any possible way to track changes to HEAD using hooks?

Being able to listen using hooks to events such as pre-head-checkout
and post-head-checkout would be the best option (from my perspective).

To my knowledge, the only possible way to do that today is by adding a
file watch over the refs directory.

No, I don't think there is currently a better way.

Actually, I completely forgot about Patrick's recent ref-transaction
hook. See the "reference-transaction" section of githooks(7). They do
more than you'd need, but you should be able to write a hook that just
looks for updates to HEAD, or updates to the ref that HEAD is pointing
at.

The code was introduced in 6754159767 (refs: implement reference
transaction hook, 2020-06-19), so you'll need Git v2.28.0 or later.

-Peff