$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ocamlgraph.git /var/lib/mock/f31-build-76372-31407/root/thebuilddir/tmp/scmroot/ocaml-ocamlgraph
Cloning into '/var/lib/mock/f31-build-76372-31407/root/thebuilddir/tmp/scmroot/ocaml-ocamlgraph'...
$ git reset --hard e0204097a282d3d3bc789be5c8052cdb52dfcf68
HEAD is now at e020409 OCaml 4.08.1 (rc2) rebuild.