issue

• 链接 github 时，总是出现错误提示

ssh_exchange_identification: Connection closed by remote host
fatal: Could not read from remote repository.

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

环境

• windows 7 64bit
• git version: git version 2.8.3.windows.1

结论

经过调查发现，在C:\Users\xxx\.ssh\config中的配置出现了问题，HostName 应配置为 ssh.github.com，不要漏掉 ssh.
以下是完整配置（IdentityFile 需自行指定）

Host github.com
    User git
    HostName ssh.github.com
    Port 443
    IdentityFile /C/Users/xxx/.ssh/id_rsa