They're using gitweb. You can read the code for any commit, just click the 'tree' link associated with it. Alternatively, just click the 'tree' link at the top

They're using gitweb. You can read the code for any commit, just click the 'tree' link associated with it. Alternatively, just click the 'tree' link at the top for the tree of the latest commit in their default 'mob' branch.