How to specify a branch for pull?

[harsiddhdave44]

I've been looking for the Python version of the following git command:
git pull origin master
So far, I've tried to inspect the code to see if there's a way to specify a branch for the pull, but I couldn't find any. I guess I'd have to pass the branch in kwargs of repo_obj.remotes.origin.pull, but I'm not sure if it's the right way to do it.

Could someone please explain to me why the pull function doesn't have any parameter for this, and how can I specify the branch for the pull?

[Byron]

It's possible to configure the refspec as first argument to pull (as documented in the fetch method) can be refs/heads/local-branch:refs/heads/upstream-branch to fetch upstream-branch and bring it into local-branch.