so i have this very weird problem. im currently making a custom archlinux iso and im now confident enought that i have everything i need to run the first test install. however when i run the buildscript it begins with updating the packages from the repo but cant find any multilib sources. it just gives a list of 404 errors. when i do a pacman -syy then it downloads the multilib database just fine, its only the archiso build script that has problems. i have no idea what is going wrong as archiso should use the mirrorlist of the main install right?. anyone had similar problems and or has some ideas how to solve it?