$ git clone -n https://src.fedoraproject.org/rpms/erlang-luerl.git /var/lib/mock/f41-build-side-1-2672159-29191/root/chroot_tmpdir/scmroot/erlang-luerl
Cloning into '/var/lib/mock/f41-build-side-1-2672159-29191/root/chroot_tmpdir/scmroot/erlang-luerl'...
$ git fetch origin c720e01a0b805aadb4b61441c7e459dc7f8682b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-luerl
 * [new ref]         c720e01a0b805aadb4b61441c7e459dc7f8682b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c720e01 luerl ver. 1.2.1