首先，记录一下mac系统显示隐藏文件夹的快捷键：command+shift+句号，可以显示工程目录下的隐藏的git文件夹

一  git报错:‘origin‘does not appear to be a git repository的解决方法

找到工程目录下的.git/config文件发现里边没有remote origin的配置，手动填上去，如下：

[core]repositoryformatversion = 0filemode = falsebare = falselogallrefupdates = truesymlinks = falseignorecase = true
[remote "origin"]url = 远程仓库地址fetch = +refs/heads/*:refs/remotes/origin/*
[branch "master"]remote = originmerge = refs/heads/master

二  git报错fatal: ‘origin‘ does not appear to be a git repository Could not read from remote repository

检查remote内容

git remote -v

删除远程origin

git remote rm origin

检查是否完全删除

git remote -v

重新建立连接

git remote add origin 远程仓库的地址

三  git报错fatal: refusing to merge unrelated histories

git merge master --allow-unrelated-histories
git pull --allow-unrelated-histories
git push origin master