$ git clone -n https://src.fedoraproject.org/rpms/ocaml-cryptokit.git /var/lib/mock/f31-build-91344-32308/root/chroot_tmpdir/scmroot/ocaml-cryptokit
Cloning into '/var/lib/mock/f31-build-91344-32308/root/chroot_tmpdir/scmroot/ocaml-cryptokit'...
$ git reset --hard 03a428fde755cb3810da5c3d04176f6c85e23641
HEAD is now at 03a428f OCaml 4.08.1 (rc2) rebuild.