Re: [QUESTION] Tracking HEAD changes?

That indeed seems to do the trick.
I've done a little experiment and saw that when doing git reset the
hook gets called.

However, when switching branches the hook doesn't execute :(

I don't understand if it's intentional, since when I've moved to a new
branch HEAD pointed to another commit id.
The only workaround I see here is using the post-checkout hook in addition.

Thank you very much for helping me. I really appreciate it!!
     Yaron

On Tue, Feb 23, 2021 at 10:42 PM Jeff King [off-list ref] wrote:

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

quoted

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