Mac升级到macOS Sierra（版本 10.12或10.1

error：

Unable to negotiate with 192.168.120.246 port 29418: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1

fatal: Could not read from remote repository.

修复：

1）、sudo vim /etc/ssh/ssh_config

2）、添加

Host *

KexAlgorithms +diffie-hellman-group1-sha1