$ git clone -n https://src.fedoraproject.org/rpms/ocaml-zarith.git /var/lib/mock/f31-build-90863-32252/root/chroot_tmpdir/scmroot/ocaml-zarith
Cloning into '/var/lib/mock/f31-build-90863-32252/root/chroot_tmpdir/scmroot/ocaml-zarith'...
$ git reset --hard 6213d2ac1a4094c96a075f83ca02e61555503d70
HEAD is now at 6213d2a OCaml 4.08.1 (rc2) rebuild.