$ git clone -n https://src.fedoraproject.org/rpms/ocaml-variantslib.git /var/lib/mock/f42-build-865661-173376/root/chroot_tmpdir/scmroot/ocaml-variantslib
Cloning into '/var/lib/mock/f42-build-865661-173376/root/chroot_tmpdir/scmroot/ocaml-variantslib'...
$ git fetch origin 1beb0e8c70056024c830cf9f790f2689a218cba0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-variantslib
 * [new ref]         1beb0e8c70056024c830cf9f790f2689a218cba0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1beb0e8 OCaml 5.3.0 rebuild for Fedora 42