git pull 失败的解决办法

参考 ：
http://www.cnblogs.com/leealways87/archive/2013/04/14/3020840.html

执行sudo git pull
提示

Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

做以下操作：

 git config --global user.name davidhuang
 git config --global user.email davidhuang@nmg.com.hk
 git remote set-url origin https://davidhuang_nmg@bitbucket.org/gitadmin/it-  message-center.git

解决问题。