$ git clone -n https://src.fedoraproject.org/rpms/Mars.git /var/lib/mock/f40-build-2265249-54593/root/chroot_tmpdir/scmroot/Mars
Cloning into '/var/lib/mock/f40-build-2265249-54593/root/chroot_tmpdir/scmroot/Mars'...
$ git fetch origin 84082d6bca4920162416c1b73ba7543c532459f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/Mars
 * [new ref]         84082d6bca4920162416c1b73ba7543c532459f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84082d6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild