Warning: Permanently added 'domain.com,1.2.3.4' (RSA) to the list of known hosts.
GitLab: The project you were looking for could not be found.
fatal: Could not read from remote repository.

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

未找到解决办法。

另外一个项目就可以成功的git clone git@xxxxxxxx.git

目测不是客户端的问题。

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可以参考

1. http://stackoverflow.com/questions/32212593/multiple-ssh-keys-are-not-working