修改已有git仓库的远程仓库指向

$ git remote set-url origin git@github.com:test/thinkphp.git

或者

$ git config -e

直接编辑其中origin的url就行了，退出时记得保存

[core]
        repositoryformatversion =
        filemode = false
        bare = false
        logallrefupdates = true
        symlinks = false
        ignorecase = true
        hideDotFiles = dotGitOnly
[remote "origin"]
        fetch = +refs/heads/*:refs/remotes/origin/*
        url = https://github.com/x/thinkphp.git
[branch "master"]
        remote = origin
        merge = refs/heads/master