$ git clone -n https://src.fedoraproject.org/rpms/ocaml-tyxml.git /var/lib/mock/f37-build-643462-72113/root/chroot_tmpdir/scmroot/ocaml-tyxml
Cloning into '/var/lib/mock/f37-build-643462-72113/root/chroot_tmpdir/scmroot/ocaml-tyxml'...
$ git reset --hard ea8640d9812b83545fd838915de8efbaf5822f63
HEAD is now at ea8640d Rebuild for ocaml-ppxlib 0.27.0.