fatal: remote origin already exists.

git remote rm origin

git remote set-url origin https://github.com/your/repository

git remote set-url origin [email protected]:ppreyer/first_app.git

$ git remote set-url origin [email protected]:ppreyer/first_app.git

git remote rm origin
git remote add origin [email protected]:username/myapp.git

git remote set-url origin https://github.com/your/repository