Creating new remote branch in git?

In the next couple of days it's going to be time to branch off
REL9_1_STABLE from master, and I realized that I am pretty foggy on
how to do that in git.  I suppose it's some variant of

git checkout master        # if not there already
git branch REL9_1_STABLE
git push origin REL9_1_STABLE

but it's not clear to me whether any options are needed to ensure that
the right branch tracking behavior gets set up.

Should this process get documented at
http://wiki.postgresql.org/wiki/Committing_with_Git ?
Right at the moment that only explains how to set up a local
copy of an already-existing branch.
        regards, tom lane