$ git clone -n https://src.fedoraproject.org/rpms/arptables.git /var/lib/mock/f39-build-1494786-34543/root/chroot_tmpdir/scmroot/arptables
Cloning into '/var/lib/mock/f39-build-1494786-34543/root/chroot_tmpdir/scmroot/arptables'...
$ git fetch origin c4a9a6903d5f62e5a52647e68479bc9a8776f7f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arptables
 * [new ref]         c4a9a6903d5f62e5a52647e68479bc9a8776f7f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c4a9a69 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild