Got it. Thanks!

On Sun, Nov 21, 2021, 10:00 AM Eli Zaretskii <eliz@gnu.org> wrote:
> From: Mark Kennedy <mark.t.kennedy@gmail.com>
> Date: Sun, 21 Nov 2021 09:56:47 -0500
> Cc: Eli Zaretskii <eliz@gnu.org>, 51794-done@debbugs.gnu.org
>
> quick question only indirectly related to the fix.  why would it go
> into the emacs-28 branch and not the HEAD branch?  if you're busy,
> don't worry about answering.  or both branches?

The release branch gets merged to master quite regularly, so this is
not a problem, and the bonus is that the same commit exists on master
as well.