$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-optcomp.git /var/lib/mock/f37-build-637210-70124/root/chroot_tmpdir/scmroot/ocaml-ppx-optcomp
Cloning into '/var/lib/mock/f37-build-637210-70124/root/chroot_tmpdir/scmroot/ocaml-ppx-optcomp'...
$ git reset --hard 51556fc1541f1f0795192b55e6828d6c3b68c184
HEAD is now at 51556fc Rebuild for ocaml-ppxlib 0.27.0.