$ git clone -n https://src.fedoraproject.org/rpms/ocaml-dune.git /var/lib/mock/f40-build-2299870-56674/root/chroot_tmpdir/scmroot/ocaml-dune
Cloning into '/var/lib/mock/f40-build-2299870-56674/root/chroot_tmpdir/scmroot/ocaml-dune'...
$ git fetch origin 77a25cee8cf62a3db1a9e239c76b7c96934921db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-dune
 * [new ref]         77a25cee8cf62a3db1a9e239c76b7c96934921db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77a25ce Version 3.13.0