The authenticity of host 'github.com (52.74.223.119)' can't be established.

The authenticity of host ‘github.com (52.74.223.119)’ can’t be established.

在初始化git之后（git init），同时在github建立好仓库之后，本地也新增了ssh kye（ssh-keygen -t rsa -C ‘mail address’），同时也在本地新增了远程仓库（git remote add origin github地址）， 但是在git push的时候出现错误

　The authenticity of host 'github.com (192.30.255.112)' can't be established.
RSA key fingerprint is SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8.
Are you sure you want to continue connecting (yes/no)? 

这里你直接回车的话会出现验证失败

Host key verification failed.
fatal: Could not read from remote repository.

验证失败。谷歌了一下，原来是本地少了 know_host文件，只要在刚刚那个位置输入yes就可以了，而不是回车（回车惯了）