Delete sensitive data from git

Caution: please use the below knowledge with caution — all the tools described below cannot be used with blind copy-pasting. Be aware of that — you have been warned (commands are not working). (But if you do have any funny/scary stories, please share in the comments).

One day, when working with your git-based project, you may accidentally save your personal logins, passwords or SSH keys to the repository. Of…