$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-variants-conv.git /var/lib/mock/f40-build-784737-133580/root/chroot_tmpdir/scmroot/ocaml-ppx-variants-conv
Cloning into '/var/lib/mock/f40-build-784737-133580/root/chroot_tmpdir/scmroot/ocaml-ppx-variants-conv'...
$ git fetch origin 5f95f8e60206373063d921b3dcde2d72d29ae99a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-variants-conv
 * [new ref]         5f95f8e60206373063d921b3dcde2d72d29ae99a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f95f8e Rebuild for changed ocamlx(Location) hash