一、fatal: refusing to merge unrelated histories

今天在pull 的时候出现：

$ git pull origin master
Warning: Permanently added the RSA host key for IP address '13.229.188.59' to the list of known hosts.
From github.com:Lovening/highConcurrencySer
 * branch            master     -> FETCH_HEAD
fatal: refusing to merge unrelated histories

解决方案

在你操作命令后面加–allow-unrelated-histories
例如：
git merge master –allow-unrelated-histories

如果你是git pull或者git push报fatal: refusing to merge unrelated histories
同理：
git pull origin master –allow-unrelated-histories