'How to get a new branch in my fork from the original repository?

I forked a repo and the original repo has gotten a new branch after I forked it.

OriginalRepo
   |
   +-BranchA
   |
   +-newBranch


MyFork
   |
   +-BranchA

I want to get the branch newBranch into my fork, how can I do this?

git

Sources

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