$ git clone -n https://src.fedoraproject.org/rpms/knighttime.git /var/lib/mock/f45-build-15301-472/root/chroot_tmpdir/scmroot/knighttime
Cloning into '/var/lib/mock/f45-build-15301-472/root/chroot_tmpdir/scmroot/knighttime'...
$ git fetch origin 158a1da7ab18ee2dfbb2c5113ed41c1cc3d14aad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/knighttime
 * [new ref]         158a1da7ab18ee2dfbb2c5113ed41c1cc3d14aad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 158a1da 6.7.4