$ git clone -n https://src.fedoraproject.org/rpms/erlang-lfe.git /var/lib/mock/f45-build-8362-386/root/chroot_tmpdir/scmroot/erlang-lfe
Cloning into '/var/lib/mock/f45-build-8362-386/root/chroot_tmpdir/scmroot/erlang-lfe'...
$ git fetch origin 80999e51866553dfd6644fe5911cd198227dc21e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-lfe
 * [new ref]         80999e51866553dfd6644fe5911cd198227dc21e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80999e5 LFE ver. 2.2.0