Current git in trixie crashes on certain .mailmap entries.
For example, .mailmap from the qemu git tree:

 $ git check-mailmap qemu-devel@nongnu.org
 Segmentation fault


this makes some things to crash, for example, `git send-email`
with `--mailmap` argument does not work.

This is an upstream bug, fixed by commit bb60c5213134cda73c31940ec0fb33c361a064eb:
https://github.com/git/git/commit/bb60c5213134cda73c31940ec0fb33c361a064eb
This commit is a part of v2.49.0 upstream release.

It would be nice to have this issue fixed in trixie, so that the
git package from debian stable can be used without resorting to
rebuilding it locally.

Thanks,

/mjt