Can we export history from Unity Asset Server?

We need to migrate away from Asset Server since it has no branching functionality. Is there a way to export our revision history to any other version control system (Subversion, Git, or Mercurial would be fine)?

If not, is there an easily automatable way to update a project through the history, one revision at a time, so we can write a script to convert the whole history?

Old thread but if someone else is looking for the same thing there is a post on emailing the change history here - http://forum.unity3d.com/threads/9928-Announcement-program-to-email-commit-logs-to-developers

You could likely hack that to export the revision history.