初始化 Git 仓库
要开始控制当前不在版本控制之下的项目目录，请访问Tools >Git ，然后选择Create Repository 。
Qt Creator Git会创建一个名为.git的新子目录，其中包含所有必要的版本库文件。
不过，Git 还不能跟踪项目中的任何内容，因此需要创建一个初始提交来开始跟踪项目文件。
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