$ git clone -n https://src.fedoraproject.org/rpms/mm.git /var/lib/mock/f40-build-790707-136817/root/chroot_tmpdir/scmroot/mm
Cloning into '/var/lib/mock/f40-build-790707-136817/root/chroot_tmpdir/scmroot/mm'...
$ git fetch origin ee38eb082ee6bffbc4d940eb1cc4a45254336a28:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mm
 * [new ref]         ee38eb082ee6bffbc4d940eb1cc4a45254336a28 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee38eb0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild