Git is a  distributed version control system.
Git is free software distributed under the GPL.
Git has a mutable index called stage.
Git tracks changes of files.
My stupid boss still prefers SVN.
老板真傻.
Creating a new branch is quick.
Creating a new branch is quick and simple.
修改readme.txt文件，并提交一个新的commit：
Git is a free software ...
Just a repository
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分支 readme-edits 的更改