$ git clone -n https://src.fedoraproject.org/rpms/python-BTrees.git /var/lib/mock/f29-build-636-362/root/thebuilddir/tmp/scmroot/python-BTrees
Cloning into '/var/lib/mock/f29-build-636-362/root/thebuilddir/tmp/scmroot/python-BTrees'...
$ git reset --hard e212b9a38fba7840a150ece42c3b42d17ea32f32
HEAD is now at e212b9a New upstream version.