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From:   Erik Cervin Edin <erik@cervined.in>
Date:   Tue, 1 Nov 2022 15:34:51 +0100
Message-ID: <CA+JQ7M81t0Lby=sB5GpUzJWakPgbi-ZNiQUL4va0wjDuk4v++Q@mail.gmail.com>
Subject: Re: Consist timestamps within a checkout/clone
To:     Mark Hills <mark@xwax.org>
Cc:     git@vger.kernel.org
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I have little to add on the underlying issue or non-issue but some
ideas on how to solve your problem

On Mon, Oct 31, 2022 at 8:39 PM Mark Hills <mark@xwax.org> wrote:
>
> ...
> Indeed, Make is acting reasonably as the source file is sometimes
> marginally newer than the destination (both checked out by Git), example
> below.
>
> I've never had to consider consistency timestamps within a Git checkout
> until now.
>
> It's entirely possible there's _never_ a guarantee of consistency here.

If your makefile depends on checkout, why not
  git ls-files | xargs touch
or if this done in an environment where there's not a fresh clone each
time, maybe
  git diff HEAD --name-only --diff-filter=AM | xargs touch
or something along those lines