一.git工作区、暂存区、本地库的图解:
https://blog.csdn.net/qq_22337877/article/details/73249912
https://www.cnblogs.com/qdhxhz/p/9757390.html
三.比较详细整体流程的图解
http://marklodato.github.io/visual-git-guide/index-zh-cn.html
https://www.zhihu.com/search?type=content&q=git%20