$ git clone -n https://src.fedoraproject.org/rpms/ocaml-extlib.git /var/lib/mock/f31-build-87723-31937/root/chroot_tmpdir/scmroot/ocaml-extlib
Cloning into '/var/lib/mock/f31-build-87723-31937/root/chroot_tmpdir/scmroot/ocaml-extlib'...
$ git reset --hard a1eaf23f703f803b0a8185ef1f51e5d67750a02c
HEAD is now at a1eaf23 OCaml 4.08.1 (rc2) rebuild.