$ git clone -n https://src.fedoraproject.org/rpms/libfullock.git /var/lib/mock/f40-build-785747-134083/root/chroot_tmpdir/scmroot/libfullock
Cloning into '/var/lib/mock/f40-build-785747-134083/root/chroot_tmpdir/scmroot/libfullock'...
$ git fetch origin b9606ff38b6a448e65bdbcddf5f25847dacedb26:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libfullock
 * [new ref]         b9606ff38b6a448e65bdbcddf5f25847dacedb26 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9606ff Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild