Hi,
I usually pull master, todo and pu from git.kernel.org. Evidently, one of the two servers behind that address lags behind a lot. So, half of the time I get the message "* refs/heads/junio: does not fast forward to branch 'master' of junio;".
The real fun starts when I do it again, and the other server is picked. No matter what, I get all objects of "pu" which are not in "master", since the versions of "pu" on the two servers do not fast forward to the other, respectively.
If I would not happen to know which server has the up-to-date version of "master", I could not tell if the version of "pu" is up-to-date or not, since "pu" is rebased every so often, and therefore one the ref is updated, even if it is an older version of pu.
So, I played a bit with "pu" only to find out after quite a while, that it was not the current version after all.
Hthop, Dscho