Since all commits are stored in a directory, './lolcommits', and it's triggered when you make a commit, it seems like it would be straightforward to create a post commit hook that adds the new image to git-annex, especially as the filename is the commit's hash. Alternatively, you could simply use the assistant to watch the directory and sync it for you. So there's no need for built-in git-annex integration, though it would make it nicer.