The GitHub repositories are updated once every night MET (i think at 1am), the changes of today should be available tomorrow.
It is a goal to make github (or similar) the primary repository, but this will happen after the release of OpenACS 5.10. Most of the work will be to adjust tagging and .apm files to the tagging semantics of git (tags are per repo, in CVS per file) and to update the various pieces of information. In the best of all possible worlds, we would like to have a update-from repository via web interface from git to hide some of the details.