If someone of Qt developers read this: please make sure that mirror system redirect only to the mirror servers that actually have the file. I'm in Vietnam right

If someone of Qt developers read this: please make sure that mirror system redirect only to the mirror servers that actually have the file. I'm in Vietnam right now and MaintenanceTool starting download from "mirrors.ustc.edu.cn" that just return "Not Found" error. Using VPN in different country helps to avoid it since it's using different mirror, but it's still annoying.