git push origin -u code example

Example 1: git check upstream url

git remote show origin

Example 2: show remote git

# when you are not connected to the network, you can use this
git config --get remote.origin.url

Example 3: git push origin

git branch -M main

then

git push -u origin main

or 

git push -f origin main

or 

git push origin master --force

Example 4: push u git

$ git push -u origin test
Branch test set up to track remote branch test from origin.
Everything up-to-date
$ git pull
Already up-to-date.