$ git clone -n https://src.fedoraproject.org/rpms/gupnp.git /var/lib/mock/f39-build-1927458-43057/root/chroot_tmpdir/scmroot/gupnp
Cloning into '/var/lib/mock/f39-build-1927458-43057/root/chroot_tmpdir/scmroot/gupnp'...
$ git fetch origin 19ce454acf5dd9931f0dd78464672a99bddb3f1d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gupnp
 * [new ref]         19ce454acf5dd9931f0dd78464672a99bddb3f1d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19ce454 Update to 1.6.6