how to push code to an existing repo github code example
Example 1: git push existing code to new repository
git remote add origin <remote repository URL>
Example 2: git existing code to new repository
cd myapp
git init
git remote add origin https://github.com/myname/myapp.git
git add .
git commit -m "Initial commit"
git push -u origin master
Example 3: pushing an existing rep from command line to github repo
git remote add origin https://github.com/Mo-Aziz/React-shopping-cart.git
git branch -M main
git push -u origin main
Example 4: push a project to an existing repoin github using git
$ git init -b main