报错信息：
Unable to negotiate with 192.168.1.199 port 29418: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
错误原因：ip受限，生成密钥前没有执行git init初始化config文件
解决方案：修改~/.ssh/config，加入
Host *
KexAlgorithms +diffie-hellman-group1-sha1