代码服务器OpenSSH从7.6版本，升级到8.7p之后，就无法从gitlab上拉代码。错误如下：
Cloning into 'test'...
Bad owner or permissions on /home/user/.ssh/config
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.查看config权限。问题原因：config文件权限太开放了
$ ll ~/.ssh/config
-rw-rw-r-- 1 user user 114 6月 28 17:41 config修改config文件权限为：600。问题解决。
$ chmod 600 ~/.ssh/config
$ ll ~/.ssh/config
-rw------- 1 user user 114 6月 28 17:41 config