$ git clone -n https://src.fedoraproject.org/rpms/ocaml-lwt.git /var/lib/mock/f37-build-644388-72220/root/chroot_tmpdir/scmroot/ocaml-lwt
Cloning into '/var/lib/mock/f37-build-644388-72220/root/chroot_tmpdir/scmroot/ocaml-lwt'...
$ git reset --hard 278f8d25ea08dc947d110660da944514a711cf27
HEAD is now at 278f8d2 Rebuild for ocaml-ppxlib 0.27.0