Thank you for the suggestion. We are actually starting our official transition to hg, which makes things a bit unstable.

The final URL (http://hg.python.org/cpython/) is currently a test repo, while the "usable for work right now" (http://code.python.org/hg/) repositories are temporary mirrors which will get dismantled once the transition is over. Meaning we probably want to adapt your patch a bit, once the dust settles ;)