报错如下：
bash: git-upload-pack: command not found
fatal: Could not read from remote repository.
原因:代码服务器git安装路径是/usr/local/git，不是默认路径，根据提示，在git服务器上， 建立链接文件：
# ln -s /usr/local/git/bin/git-upload-pack /usr/bin/git-upload-pack 你发现再次 git clone 时
报错如下：
bash: git-receive-pack: command not found
fatal: Could not read from remote repository.
# ln -s /usr/local/git/bin/git-receive-pack /usr/bin/git-receive-pack再次执行 git clone 成功！