Flutter导入本地项目报错

Error: The Flutter directory is not a clone of the GitHub project.
The flutter tool requires Git in order to operate properly;
to set up Flutter, run the following command:
git clone -b beta https://github.com/flutter/flutter.git
下载完flutter，Android studio配置好flutter和dart sdk路径，依然报错。
根据提示删除本地已下载的flutter，执行git clone -b beta https://github.com/flutter/flutter.git重新拉取flutter，一直拉取失败。
简单做法，直接在本地下载好的flutter文件夹下，执行git init ,添加git就可以了。