Once you have uploaded your source code to Heroku, is it possible to download it from there if necessary such as in the case of a failure of your local disk?
Because of
First, you need to install the heroku Toolbelt.
2nd, generate SSH key by the command: heroku keys:add
heroku keys:add
3rd, clone your repo: git clone git@heroku.com:__your_repo__.git
git clone git@heroku.com:__your_repo__.git