$ git clone -n https://src.fedoraproject.org/rpms/libkmahjongg.git /var/lib/mock/f45-build-16447-486/root/chroot_tmpdir/scmroot/libkmahjongg
Cloning into '/var/lib/mock/f45-build-16447-486/root/chroot_tmpdir/scmroot/libkmahjongg'...
$ git fetch origin ff11e1d0c76827f3f875df76a2fb2ed79c196d82:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkmahjongg
 * [new ref]         ff11e1d0c76827f3f875df76a2fb2ed79c196d82 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff11e1d 26.08.1