Han-Wen Nienhuys [off-list ref] writes:
FWIW, I regularly mess up with the differences between fetching,
pulling and merging. In particular, having to do a two step process
to get remote changes in,
git pull url-to-server master:master
..error message about not being a fast-forward..
git pull --update-head-ok url-to-server master:master
..still an error message about update not being a fast-forward..
(sigh)
Sigh indeed.
Why don't you do the simple and obvious
git pull url master
or "git pull url" if you already know the master is the branch
you are interested in.
The more advanced form of using tracking branches are there and
documentation talks about them for completeness but that does
not mean you have to use it.