Re: rev-parse --show-toplevel broken during exec'ed rebase?

> On Mon, Jul 16, 2018 at 11:14:51AM -0700, Junio C Hamano wrote:
>
>> Porcelain, but I suspect in practice always giving GIT_DIR and
>> GIT_WORK_TREE would work well for many existing hooks.
>
> Yeah, that may be an option. I don't remember if this was discussed in
> this thread or elsewhere, but setting GIT_DIR is a regression for hooks,
> etc, which do:
>
>   git -C /some/other/repo log
>
> or similar. I'm not sure if that falls under "actual regression" or
> "just how it happened to work in the past". I'm not even sure it worked
> that way _consistently_ in the past.
>
> The best practice if you're switching directories is to do:
>
>   unset $(git rev-parse --local-env-vars)
>
> though I highly doubt that most people bother.