For this, you could use:
git branch --set-upstream <remote-branch>
this command will set the default remote branch for the current branch. Git pull will bring the commits from <remote-branch> into the current local branch.
Or you can use git push command with a -u option like this:
git push -u origin local-branch
This sets the upstream association for any future push/pull attempts automatically.
For more commands like this please go through the following tutorial that will help you understand the git