It does the code reviews in a distributed way. It just needs a central Git repo, but not a central code review server. CI tests could work in a similar way!

It does the code reviews in a distributed way. It just needs a central Git repo, but not a central code review server. CI tests could work in a similar way! Each CI runner is polling for new commits, running tests against them, and pushing the results as git-notes in the Git repo, just like for the reviews.