sudo pacman-key --refresh-keys
# enable ntp and ensure the time correct
timedatectl set-ntp 1
timedatectl status
rm -fr /etc/pacman.d/gnupg
# create pacman master key
pacman-key --init
# reload keys from keyring resources
pacman-key --populate
sudo rm /var/cache/pacman/pkg -r
pacman -Sy archlinux-keyring && pacman -Syu
