$ git clone -n https://src.fedoraproject.org/rpms/createrepo-agent.git /var/lib/mock/f45-build-5126-337/root/chroot_tmpdir/scmroot/createrepo-agent
Cloning into '/var/lib/mock/f45-build-5126-337/root/chroot_tmpdir/scmroot/createrepo-agent'...
$ git fetch origin 580af75e8da394924460f16827dae0ebb33308d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/createrepo-agent
 * [new ref]         580af75e8da394924460f16827dae0ebb33308d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 580af75 Update to 0.6.0