$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-deriving-yojson.git /var/lib/mock/f33-build-256835-50814/root/chroot_tmpdir/scmroot/ocaml-ppx-deriving-yojson
Cloning into '/var/lib/mock/f33-build-256835-50814/root/chroot_tmpdir/scmroot/ocaml-ppx-deriving-yojson'...
$ git reset --hard 8400b9b4cdc811fcddff399387658e53f77a32f3
HEAD is now at 8400b9b OCaml 4.11.0+dev2-2020-04-22 rebuild