You can clone with
HTTPS or Subversion.
Is it a place for site-specific suggestion?
Anyway, the site uses global usage stats, which is not always desirable. For example, Russian and CIS browser shares differ from global considerably (more Opera, less IE), so when working on something for this segment it'd be useful to take this into account.
It'd be even better if we could export custom usage stats from tracking services (Google Analytics and the likes) to get the data for the very project we're working on.
This was implemented together with the new design.