git 提示输入私钥 sign_and_send_pubkey: signing failed: agent refused operation

ubuntu 从其他机器拷贝了 .ssh文件夹，git clone 提示以下错误

 

查看现有解决方法

https://blog.csdn.net/StudyLww/article/details/90750158

ssh-add时提示 id_rsa权限问题

~/.ssh> chmod 0600 id_rsa

顺利解决

 

附常用GIT维护工具

 git remote prune origin

How to fix Git fatal index file smaller than expected

$ git status
fatal: index file smaller than expected
$ rm .git/index
$ git reset HEAD .