git how to push to existing repository code example

Example 1: git push existing repo

cd existing_folder
git init
git remote add origin https://gitlab.com/abc.git
git add .
git commit -m "Initial commit"
git push -u origin master

Example 2: git push existing git repository

cd myapp
git remote rename origin old-origin
git remote add origin https://github.com/myname/myapp.git
git push -u origin --all
git push -u origin --tags