git push error fatal: The remote end hung up unexpectedly

[root@AY12112105130655f7992 ~]# git clone git@10.200.136.2:gitosis-admin.git
Initialized empty Git repository in /root/gitosis-admin/.git/
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

fatal: The remote end hung up unexpectedly

原因: 上传文件太大所致