$ git clone -n https://src.fedoraproject.org/rpms/topline.git /var/lib/mock/f40-build-791227-137270/root/chroot_tmpdir/scmroot/topline
Cloning into '/var/lib/mock/f40-build-791227-137270/root/chroot_tmpdir/scmroot/topline'...
$ git fetch origin 313e777f122fd4cdbb274a65eed85a4627bdd297:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/topline
 * [new ref]         313e777f122fd4cdbb274a65eed85a4627bdd297 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 313e777 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild