With One Remote
Jakub's answer actually improves on this. With Git versions ≥ 1.6.6, with only one remote, you can do:
git fetch
git checkout test
As user masukomi points out in a comment, git checkout test
will NOT work in modern git if you have multiple remotes. In this case use
git checkout -b test <name of remote>/test
or the shorthand
git checkout -t <name of remote>/test
With >1 Remotes
Before you can start working locally on a remote branch, you need to fetch it as called out in answers below.
To fetch a branch, you simply need to:
git fetch origin
This will fetch all of the remote branches for you. You can see the branches available for checkout with:
git branch -v -a
With the remote branches in hand, you now need to check out the branch you are interested in, giving you a local working copy:
git checkout -b test origin/test
I also created the image below for you to share the differences, look at how to fetch works, and also how it's different to pull:
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