$ git clone -n https://src.fedoraproject.org/rpms/shhgit.git /var/lib/mock/f39-build-1734036-41253/root/chroot_tmpdir/scmroot/shhgit
Cloning into '/var/lib/mock/f39-build-1734036-41253/root/chroot_tmpdir/scmroot/shhgit'...
$ git fetch origin 3112e795b61b9047861a8930e109eef2397f9684:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/shhgit
 * [new ref]         3112e795b61b9047861a8930e109eef2397f9684 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3112e79 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild