$ git clone -n https://src.fedoraproject.org/rpms/ocaml-dune.git /var/lib/mock/f31-build-64269-29535/root/chroot_tmpdir/scmroot/ocaml-dune
Cloning into '/var/lib/mock/f31-build-64269-29535/root/chroot_tmpdir/scmroot/ocaml-dune'...
$ git reset --hard 39473a4e59045d1e1ee59d025ba7b4557185d85d
HEAD is now at 39473a4 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild