sync the branch with fork master code example

Example 1: steps to sync branch to fork master?

$ git remote -v
> origin	https://github.com/YOUR_USERNAME/YOUR_FORK.git (fetch)
> origin	https://github.com/YOUR_USERNAME/YOUR_FORK.git (push)
> upstream  https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git (fetch)
> upstream  https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git (push)

Example 2: steps to sync branch to fork master?

$ git remote add upstream https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git