Is there a way to use review board with git without manually uploading diffs through the web interface every time?

I know review board is open source and I could modify the code myself, but I'm wondering if there is an easier way.

By "review board", I mean the web-based diff review tool that lives here: http://www.review-board.org/

I've not used the Review Board tool at all but the post-review docs do give some information about posting git commits to the tool. I would think this would be fairly simple to setup as post-commit hook in your git repository.