Source (link to git-repo or to original if based on someone elses unmodified work): https://github.com/LordShenron/android_device_xiaomi_riva/tree/aosip-o
AOSIP is a quality custom rom based purely on GOOGLE AOSP source since 6.0 release. Twisted with the latest features and blended with stability.
Its an external Link for Gdrive click on File name to visit :)
Thanks to sunnyraj84348 for trees:
And team illusion for AOSiP