SHELL

git push set upstream

git push --set-upstream origin <branch>

add upstream in git

# checking the url of remotes
git remote -v

# add another url to git
git remote add upstream <url>

# now you can use

git pull upstream master (or other branch names)

upsteam is the standard name used, but you can change it if you want to

git remote add upstream

git remote add upstream GIT_DIR

git push set upstream

git push --set-upstream <github repo url>