GitFS 介绍
GitFS 是一个使用 Python 写的软件，它允许你使用本地的缓存来实现 git
的断线存储服务。软件的设计目标并不是让你能节省空间，设计的目标是让你在连接断开的时候仍然希望能够在多个设备之间保持同步。
官方介绍如下：
A FUSE based filesystem for using Git as a disconnected storage server with
local cache. This is not designed to save space on the local server. It is
designed to allow disconnect operation and still have a hope of keeping
files in sync across many devices. There are likely better ways to do this.