$ git clone -n https://src.fedoraproject.org/rpms/celt051.git /var/lib/mock/f40-build-793772-139150/root/chroot_tmpdir/scmroot/celt051
Cloning into '/var/lib/mock/f40-build-793772-139150/root/chroot_tmpdir/scmroot/celt051'...
$ git fetch origin 6c51b13a58a02ec997ee5638d250b9c6a4814956:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/celt051
 * [new ref]         6c51b13a58a02ec997ee5638d250b9c6a4814956 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c51b13 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild