$ git clone -n https://src.fedoraproject.org/rpms/erlang-luerl.git /var/lib/mock/f40-build-1777687-24803/root/chroot_tmpdir/scmroot/erlang-luerl
Cloning into '/var/lib/mock/f40-build-1777687-24803/root/chroot_tmpdir/scmroot/erlang-luerl'...
$ git fetch origin a37d3fe6392eba271e65920b4507aca7e8531445:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-luerl
 * [new ref]         a37d3fe6392eba271e65920b4507aca7e8531445 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a37d3fe luerl ver. 1.2.0