git clone https://github.com/YerongAI/Office-Tool.git
git clone git@github.com:YerongAI/Office-Tool.git
$ ssh-keygen -t ed25519 -C "sayboy@outlook.com"
$ eval "$(ssh-agent -s)"
$ ssh-add ~/.ssh/id_ed25519
git clone git@github.com:sayboy/tutorial.git tutuaial-ssh
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