1）更新brew的源
https://blog.csdn.net/lwplwf/article/details/79097565
2）安装gitk
https://stackoverflow.com/questions/17582685/install-gitk-on-mac
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1）更新brew的源
https://blog.csdn.net/lwplwf/article/details/79097565
2）安装gitk
https://stackoverflow.com/questions/17582685/install-gitk-on-mac