$ git clone -n https://src.fedoraproject.org/rpms/erlang-lfe.git /var/lib/mock/f41-build-851346-165914/root/chroot_tmpdir/scmroot/erlang-lfe
Cloning into '/var/lib/mock/f41-build-851346-165914/root/chroot_tmpdir/scmroot/erlang-lfe'...
$ git fetch origin 5aee6e1b2332061e67fd249371ae954a8ea4df97:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-lfe
 * [new ref]         5aee6e1b2332061e67fd249371ae954a8ea4df97 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5aee6e1 LFE ver. 2.1.5