$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-variants-conv.git /var/lib/mock/f42-build-866008-173661/root/chroot_tmpdir/scmroot/ocaml-ppx-variants-conv
Cloning into '/var/lib/mock/f42-build-866008-173661/root/chroot_tmpdir/scmroot/ocaml-ppx-variants-conv'...
$ git fetch origin d2737e0ed44a08b0487a7a9db9d983f314de77be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-variants-conv
 * [new ref]         d2737e0ed44a08b0487a7a9db9d983f314de77be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2737e0 OCaml 5.3.0 rebuild for Fedora 42