新系统运行git命令提示：
git : The term 'git' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again. At line:1 char:1 + git clone https://gitee.com/macrozheng/mall.git + ~~~ + CategoryInfo : ObjectNotFound: (git:String) [], CommandNotFoundException + FullyQualifiedErrorId : CommandNotFoundException