$ git clone -n https://src.fedoraproject.org/rpms/bird.git /var/lib/mock/f40-build-790482-136596/root/chroot_tmpdir/scmroot/bird
Cloning into '/var/lib/mock/f40-build-790482-136596/root/chroot_tmpdir/scmroot/bird'...
$ git fetch origin dda788d9cd0a0e610ea5e8fd761c4d82564f41ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bird
 * [new ref]         dda788d9cd0a0e610ea5e8fd761c4d82564f41ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dda788d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild