What Is a Fork?
We created a fork of the official MegaCorp™ repo inside your GitHub account. It's a copy of the original that you can modify without affecting the original.
You may have noticed that there is no manual entry for git fork
Why?
Forking is not a Git operation, but it is a feature offered by many Git hosting services such as GitHub, GitLab, and Bitbucket.
Those services "fork" a repo by creating a new copy of the repo and associating it as a "fork" of the original. It's quite literally just a copy that is linked to the original via some metadata.
'git fork' is a command line operation that creates a copy of your local repo