How to execute a command on git am/rebase/cherry pick --abort ?

(please keep me CC'ed, I'm not subscribed)

Hello!

There's a well-known problem of git not fully checking out changes while doing e.g. `git checkout` and similar commands when you have submodules. So e.g. if HEAD changes a submodule commit and you do an interactive rebase to HEAD~2, you may be lucky to find a submodule commit change in `git diff` (because if you don't get lucky, you won't notice that and commit the change to the unrelated HEAD~2).

As a workaround I have a `git submodule update` inside `post-checkout` hook.

Now, the problem is I still often finding myself having the wrong submodule ID, and I tracked down that problem to commands such as `am/rebase/cherry-pick --abort` also not updating the submodule, nor executing `post-checkout`.

I looked through `man githooks` but couldn't find any way to execute a `git submodule update` during these aborts.

Any ideas how to fix these?