[boost] [git] develop and master are two completely distinct branches

Hi, I just cloned modular boost and wanted to get phoenix back on track. However, something very disturbing occured to me: The develop and master branches in the git repos (for all repos) are completely distinct from each other! How could this happen? In the case of phoenix those have, unfortunately, completely diverged from each other (content wise, commit wise, they have completely distinct commits). What's the best practice to do here? How to proceed? Regards, Thomas P.S.: Sorry for the long absence