$ git clone -n https://src.fedoraproject.org/rpms/cld2.git /var/lib/mock/f39-build-1456821-32937/root/chroot_tmpdir/scmroot/cld2
Cloning into '/var/lib/mock/f39-build-1456821-32937/root/chroot_tmpdir/scmroot/cld2'...
$ git fetch origin 8a0ac5a32af9c619bfb522600f61849ccbd66751:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cld2
 * [new ref]         8a0ac5a32af9c619bfb522600f61849ccbd66751 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a0ac5a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild