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An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Git

Git is a free and open source distributed version control system for tracking changes in any set of files among programmers cooperating on source code during software development. It is designed to handle everything from small to very large projects with speed and efficiency.

Last Updated: Jul 28, 2021