Create a Heroku app from a git repo and verify the remote in your git configuration
$ heroku create
$ git remote -v
Add an existing Heroku app to a git repo
$ git remote add heroku [email protected]:<project>.git
Create a named app
$ heroku apps:create example123
$ heroku apps
$ heroku apps:info --app example123
View remote Heroku branch from a git repo
$ git remote show heroku
Delete a remote Heroku branch
$ git push heroku :master
Push the master branch
$ git push heroku master
Create a local tracking branch heroku_dev, and push to heroku/master
$ git checkout -b heroku_dev -t heroku/master
$ git config remote.heroku.push heroku_dev:master
$ git push heroku