We're using git-annex to manage large files as part of a team. We have a central repository of large files that everyone grabs from. We would like to be able to get the files without updating the `git-annex` branch. This way it doesn't pollute the history with essentially always unreachable locations. I think the easiest way would be to just add an option to not update the `git-annex` branch when `annex get` is executed. Thoughts?