$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-rethinkdb-6.git /var/lib/mock/f41-build-side-1-2878566-34444/root/chroot_tmpdir/scmroot/golang-gopkg-rethinkdb-6
Cloning into '/var/lib/mock/f41-build-side-1-2878566-34444/root/chroot_tmpdir/scmroot/golang-gopkg-rethinkdb-6'...
$ git fetch origin e34f5c8cff20e6b05f41f01851b546645eb7c867:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-rethinkdb-6
 * [new ref]         e34f5c8cff20e6b05f41f01851b546645eb7c867 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e34f5c8 convert ASL 2.0 license to SPDX