I've recently started using http://hg-git.github.com/ http://hg-git.github.com/ (found it via a comment on HN, IIRC) which allows you to use the Mercurial comma

I've recently started using http://hg-git.github.com/ http://hg-git.github.com/ (found it via a comment on HN, IIRC) which allows you to use the Mercurial command line tools to interact with Git repositories on GitHub. It was created by people at GitHub.