方法一：直接命令修改

    1. git remote set-url origin xxx
    3. 示例：
    4. git remote set-url origin git@github.com:test/thinkphp.git

    方法二：修改配置文件，直接编辑其中origin的url就行了，退出时记得保存

    1. git config -e
    3. [core]
    4.         repositoryformatversion = 0
    5.         filemode = false
    6.         bare = false
    7.         logallrefupdates = true
    8.         symlinks = false
    9.         ignorecase = true
    10.         hideDotFiles = dotGitOnly
    11. [remote "origin"]
    12.         fetch = +refs/heads/*:refs/remotes/origin/*
    13.         url = https://github.com/x/thinkphp.git
    14. [branch "master"]
    15.         remote = origin
    16.         merge = refs/heads/master