$ git clone -n https://src.fedoraproject.org/rpms/gupnp-av.git /var/lib/mock/f41-build-side-1-2641680-26732/root/chroot_tmpdir/scmroot/gupnp-av
Cloning into '/var/lib/mock/f41-build-side-1-2641680-26732/root/chroot_tmpdir/scmroot/gupnp-av'...
$ git fetch origin 3e271fb7709ab7c2cd3aa181de5c858f5102805d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gupnp-av
 * [new ref]         3e271fb7709ab7c2cd3aa181de5c858f5102805d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e271fb convert license to SPDX