@just @megaman @anarch
sudo rankmirrors -n 0 /etc/pacman.d/antergos-mirrorlist > /tmp/antergos-mirrorlist && sudo cp /tmp/antergos-mirrorlist /etc/pacman.d
:). Mirrors need to be all in use though.
In theory, antergos-mirrorlist should contain one repo only - the native [antergos].
In practive, after checking by hand 10 first servers from antergos-mirrorlist, all of them contain [antergos] repo only.
Any Antergos system has some packages installed from this repo. At least antergos-keyring, for example. So it must be always in use on such systems.
Hence, your method is perfect for updating antergos-mirrorlist automatically .