That gives a routing error:

Started GET "/git/android/graph" for 127.0.0.1 at 2013-01-24 08:58:59 -0800
Processing by ProjectsController#graph as HTML
  Parameters: {"id"=>"android"}
  Rendered projects/graph.html.haml within layouts/project_resource (3.0ms)
Completed 500 Internal Server Error in 25ms

ActionController::RoutingError (No route matches {:controller=>"commit", :action=>"show"}):
  app/views/projects/graph.html.haml:14:in `_app_views_projects_graph_html_haml__290458963_99150210'
  app/controllers/projects_controller.rb:94:in `graph'