A time traveller's guide to Git

While scientists have crushed the dream of travelling back in time, Git offers control over the fourth dimension when the wrongs of the past need to be corrected. The distributed version control system allows commits to be amended, discarded, reordered and modified to scrub the history of a repository.

But, heed the warnings of an experienced time traveller. Git obeys the law of causality; every commit in a Git repository is inextricably linked to the commit before it. Changing one commit alters all the commits that come after, creating an alternate reality. Altering the past can be dangerous and — except in rare circumstances — should only be done if the events being altered have not been observed by anyone else. Branches that have already been pushed to a remote should not be altered.

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