$ git clone -n https://src.fedoraproject.org/rpms/erlang-stun.git /var/lib/mock/f40-build-1507256-23890/root/chroot_tmpdir/scmroot/erlang-stun
Cloning into '/var/lib/mock/f40-build-1507256-23890/root/chroot_tmpdir/scmroot/erlang-stun'...
$ git fetch origin 93576200d0ce014ec183eb9255a0bad4fa1d7699:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-stun
 * [new ref]         93576200d0ce014ec183eb9255a0bad4fa1d7699 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9357620 stun ver. 1.2.13