$ git clone -n https://src.fedoraproject.org/rpms/vokoscreenNG.git /var/lib/mock/f42-build-side-1-3510453-46033/root/chroot_tmpdir/scmroot/vokoscreenNG
Cloning into '/var/lib/mock/f42-build-side-1-3510453-46033/root/chroot_tmpdir/scmroot/vokoscreenNG'...
$ git fetch origin 7c90637c98acd609bc01ab40db16b109d98a2939:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vokoscreenNG
 * [new ref]         7c90637c98acd609bc01ab40db16b109d98a2939 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c90637 Update to 4.4.7 upstream release