Bitbucket克隆私人git存储库

我想要克隆私有git存储库bitbucket,但ssh-key我的工作站上还没有.当我尝试克隆时,我得到以下内容:

Cloning into 'notdefinedyet'...
Permission denied (publickey).
fatal: Could not read from remote repository.

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

我必须生成一个新的,ssh-key还是可以获得之前安装的旧密钥？如果是这样,我怎么能得到它？