$ git clone -n https://src.fedoraproject.org/rpms/ii.git /var/lib/mock/f45-build-14048-456/root/chroot_tmpdir/scmroot/ii
Cloning into '/var/lib/mock/f45-build-14048-456/root/chroot_tmpdir/scmroot/ii'...
$ git fetch origin 4e6a5cc500cc25f57d2648c53a297dc125615a58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ii
 * [new ref]         4e6a5cc500cc25f57d2648c53a297dc125615a58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e6a5cc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild