How to pull only a few files from one branch to another?

I have a long-running topic branch. I have fixed a few nits on the master branch that I would like on the topic branch. How do I pull in only a few files from the head of the master branch?

I tried all sorts of incantations (I am running 1.5.0-rc2), including:

git pull . origin foo.cc git pull origin foo.cc git pull foo.cc master git pull . master foo.cc git pull master foo.cc

Bill