$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-vmihailenco-msgpack-2.git /var/lib/mock/f45-build-12668-443/root/chroot_tmpdir/scmroot/golang-gopkg-vmihailenco-msgpack-2
Cloning into '/var/lib/mock/f45-build-12668-443/root/chroot_tmpdir/scmroot/golang-gopkg-vmihailenco-msgpack-2'...
$ git fetch origin 50fa8000d3107911b8ff3f84a522b885387506d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-vmihailenco-msgpack-2
 * [new ref]         50fa8000d3107911b8ff3f84a522b885387506d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 50fa800 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild