如何在提交前撤消'git add'？ - How do I undo 'git add' before commit?

问题：

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I mistakenly added files to Git using the command: 我错误地使用如下命令将文件添加到了Git：

git add myfile.txt

I have not yet run git commit . 我尚未运行git commit 。 Is there a way to undo this, so these files won't be included in the commit? 有一种方法能够撤消此操做，以便这些文件不会包含在提交中？

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解决方案：

参考一： https://stackoom.com/question/1SZe/如何在提交前撤消-git-add
参考二： https://oldbug.net/q/1SZe/How-do-I-undo-git-add-before-commit