It appears the patches included in cf94aa4 do not apply cleanly during build to the 1e22c9b9eb691878156dfe32fb1e117737f1d248 commit of https://github.com/openwrt/archive.git as mentioned in the readme (or possibly the openwrt-packages).
Did these ever apply cleanly for you?
Is it possible you were using a newer commit of the openwrt-archive?