$ git clone -n https://src.fedoraproject.org/rpms/ocaml.git /var/lib/mock/f31-build-46843-26724/root/thebuilddir/tmp/scmroot/ocaml
Cloning into '/var/lib/mock/f31-build-46843-26724/root/thebuilddir/tmp/scmroot/ocaml'...
$ git reset --hard 0cadb87d8454c7a55bf92b530c5fbc9d0bfcbacc
HEAD is now at 0cadb87 OCaml 4.08.0 (RHBZ#1673688).