How to track remote branches
Assuming there is a remote repository that you cloned your local repository from and also assuming that there is a branch named 'some_branch' on that remote repository, here is how to track it locally:
# list remote branches
git branch -r
# start tracking one remote branch
git branch --track some_branch origin/some_branch
# change to the branch locally
git checkout some_branch
# make changes and commit them locally
....
# push your changes to the remote repository:
git push
