git clone 时报错Permission denied (publickey)

下面是我生成ssh的全过程：
生成ssh：

测试与GitHub网站是否联通：

显示是可以联通成功的

使用ssh方式克隆项目：

报错：
Warning: Permanently added the RSA host key for IP address '192.30.253.112' to t
he list of known hosts.
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

请问大师们，这是什么问题

你这https://github.com/HZ-1/112是空的repository吧？

先自己创一个remote repository

echo "# test" >> README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin git@github.com:HZ-1/112.git
git push -u origin master

然后再clone