While this is something we had talked about for ages, the actual switch-over happened rather abruptly, and Cassandra's canonical repository is now hosted in Git.
For instructions on getting started, see https://git-wip-us.apache.org. We've also started putting random administrivia in the wiki at http://wiki.apache.org/cassandra/GitTransition. The Github mirror (http://github.com/apache/cassandra) hasn't been seeing updates since the move, but that will be fixed at some point. The important thing is that they share identical histories, so new (or existing forks) are forward-compatible. There are a few outstanding items being worked on (CI systems for example), but if you notice something that's been missed don't hesitate to speak up. The website will be updated as soon as SVN is unlocked. There are also some matters of work-flow or process that we need to hashed out. For example, how do we handle reviews now? Do we continue to mandate/recommend/allow rebasing? Thoughts? -- Eric Evans Acunu | http://www.acunu.com | @acunu