$ git clone -n https://src.fedoraproject.org/rpms/ocaml-gsl.git /var/lib/mock/f33-build-136404-41899/root/chroot_tmpdir/scmroot/ocaml-gsl
Cloning into '/var/lib/mock/f33-build-136404-41899/root/chroot_tmpdir/scmroot/ocaml-gsl'...
$ git reset --hard 18b5af68014d1a70eca60704547f6c05d25944bc
HEAD is now at 18b5af6 OCaml 4.10.0 final.