project is not up to date

It seems that the project was inactive for about 2 years, so it's a very outdated project.
What MIUI 8 version corresponds to the one that can be made by building this project?
Also, how can I obtain the sources for a specific MIUI version, such as MIUI 8 7.6.15 (global dev)?

To be honest, I would be happy with an .ipr file (for the mentioned version), but the sources also would be good.