$ git clone -n https://src.fedoraproject.org/rpms/python-billiard.git /var/lib/mock/f39-build-1429139-31672/root/chroot_tmpdir/scmroot/python-billiard
Cloning into '/var/lib/mock/f39-build-1429139-31672/root/chroot_tmpdir/scmroot/python-billiard'...
$ git fetch origin c13daa0003ba921ced5b3ccb2e9add93a7784d70:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-billiard
 * [new ref]         c13daa0003ba921ced5b3ccb2e9add93a7784d70 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c13daa0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild