$ git clone -n https://src.fedoraproject.org/rpms/gupnp-av.git /var/lib/mock/f42-build-side-1-3586844-46926/root/chroot_tmpdir/scmroot/gupnp-av
Cloning into '/var/lib/mock/f42-build-side-1-3586844-46926/root/chroot_tmpdir/scmroot/gupnp-av'...
$ git fetch origin ef06dbe91cfb4ca7743e8a34568983b9241a1c75:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gupnp-av
 * [new ref]         ef06dbe91cfb4ca7743e8a34568983b9241a1c75 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef06dbe Update to 0.14.4