setting upstream in git code example
Example 1: git set upstream
git branch --set-upstream-to <remote-branch>
// example
git branch --set-upstream-to origin feature-branch
// show up which remote branch a local branch is tracking
git branch -vv
// short version to set upstream with very first push
git push -u origin local-branch
Example 2: git set upstream repository
$ git remote add upstream https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git
Example 3: git setup upstream
$ git push -u <remote> <branch>