To sync changes you make in a fork with the original repository, you must configure a remote that points to the upstream repository in Git.

  1. Open Terminal (for Mac and Linux users) or the command line (for Windows users).

  2. List the current configured remote repository for your fork.

    git remote -v
# origin  https://hostname/YOUR_USERNAME/YOUR_FORK.git (fetch)
# origin  https://hostname/YOUR_USERNAME/YOUR_FORK.git (push)

  3. Specify a new remote upstream repository that will be synced with the fork.

    git remote add upstream https://hostname/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git

  4. Verify the new upstream repository you've specified for your fork.

    git remote -v
# origin    https://hostname/YOUR_USERNAME/YOUR_FORK.git (fetch)
# origin    https://hostname/YOUR_USERNAME/YOUR_FORK.git (push)
# upstream  https://hostname/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git (fetch)
# upstream  https://hostname/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git (push)