How to "pull" from a local branch into another one?

What you are looking for is merging.

git merge master

With pull you fetch changes from a remote repository and merge them into the current branch.

You have to tell Git from where to pull, in this case from the current directory/repository (.):

git pull . master

But when working locally, you can simply use merge (pull internally calls merge):

git merge master

Quite old post, but it might help somebody new into git.

I will go with

git rebase master

• much cleaner log history and no merge commits (if done properly)
• need to deal with conflicts, but it's not that difficult.