$ git clone -n https://src.fedoraproject.org/rpms/kf5-kwayland.git /var/lib/mock/f40-build-1789301-24852/root/chroot_tmpdir/scmroot/kf5-kwayland
Cloning into '/var/lib/mock/f40-build-1789301-24852/root/chroot_tmpdir/scmroot/kf5-kwayland'...
$ git fetch origin b65bdd4afc7389c295864bd2642a965d0989c51f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kwayland
 * [new ref]         b65bdd4afc7389c295864bd2642a965d0989c51f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b65bdd4 Merge branch 'rawhide' into f40