https://github.com/git-for-windows/git/releases

https://github.com/msysgit/git
Git for Windows 1.x was retired on August 18th, 2015, superseded by Git for Windows 2.x. The source code of Git for Windows 2.x is maintained in the git-for-windows org, a friendly fork of Git that aims to vet Windows-specific patches until they are submitted upstream.
Win 下终于跟上 Git 2.x 了。。