$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-congruence.git /var/lib/mock/f40-build-2278780-55284/root/chroot_tmpdir/scmroot/gap-pkg-congruence
Cloning into '/var/lib/mock/f40-build-2278780-55284/root/chroot_tmpdir/scmroot/gap-pkg-congruence'...
$ git fetch origin 03b7bb84e6fc8f4737c8c9a6b7f8e9c224a84fa9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-congruence
 * [new ref]         03b7bb84e6fc8f4737c8c9a6b7f8e9c224a84fa9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03b7bb8 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild