[ubuntu 13.04]为什么我的git使用不同的密钥文件?

我想通过git将一些源代码克隆到我的服务器上,所以:

root@wemet:~# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
79:ff:5d:07:9f:64:a7:d2:3f:81:0c:4d:ac:54:4e:fe root@wemet
The key's randomart image is:
+--[ RSA 2048]----+
| oo |
| .+o |
| . +o |
| . o .. |
| S . o oE.|
| . . +o=o|
| o o.=|
| o +o|
| . +|
+-----------------+
root@wemet:~# git clone ssh://git@git.cloudbees.com/foretribe/wetest.git
Cloning into 'wetest'...
The authenticity of host 'git.cloudbees.com (54.235.125.211)' can't be establis
ed.
ECDSA key fingerprint is 39:fe:eb:80:cd:56:bb:42:0e:bc:77:85:2c:9b:14:d2.
Are you sure you want to continue connecting (yes/no)? no
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
root@wemet:~# 

您可以看到ssh密钥生成带有指纹的文件79:ff:5d:07:9f:64:a7:d2:3f:81:c:4d:ac:54:e:fe 但当我想应用于git命令时,文件指纹是: 39:fe:eb:80:cd:56:bb:42:0e:bc:77:85:2c:9b:14:d2

git命令应该检索默认的ssh密钥文件 它应该存储在/root/.ssh中/ 为什么ssh获取其他文件?它在哪里?

这意味着它们是完全不同的文件!!!