$ git clone -n https://gitee.com/src-anolis-os/ocaml-csexp.git /var/lib/mock/dist-an23-loongarch-build-321140-67906/root/chroot_tmpdir/scmroot/ocaml-csexp
Cloning into '/var/lib/mock/dist-an23-loongarch-build-321140-67906/root/chroot_tmpdir/scmroot/ocaml-csexp'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/ocaml-csexp
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57e596e Downgrade dune language to 2.9 to fix building error with ocaml-dune-2.9.3