add upstream in git code example

Example 1: setting the upstream for a fork github

git remote add upstream https://thehttpslinkgoeshere.git

Example 2: add upstream branch git

git remote add upstream [email protected]:some-gatekeeper-maintainer/some-project.git

Example 3: git setup upstream

$ git push -u <remote> <branch>

Example 4: git remote add upstream

git remote add upstream GIT_DIR