updata error about os HOT 4 OPEN

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ssh run sudo pacmane -Syu,I want to install retroarch and fbneo,It must be upgraded
There will always be various problems when upgrading this system. It would be great if the system integrates retroarch and fbneo

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gtk-update-icon-... 17.4 KiB 4.69 KiB/s 00:04 [######################] 100%
systemd-sysvcomp... 6.0 KiB 1668 B/s 00:04 [######################] 100%
systemd-resolvco... 3.1 KiB 871 B/s 00:04 [######################] 100%
systemd-254.6-2-... 7.7 MiB 86.9 KiB/s 01:31 [######################] 100%
vim-runtime-9.0.... 6.9 MiB 75.2 KiB/s 01:34 [######################] 100%
smbclient-4.19.3... 6.7 MiB 70.3 KiB/s 01:38 [######################] 100%
intel-ucode-2023... 5.8 MiB 59.6 KiB/s 01:40 [######################] 100%
linux-firmware-2... 198.8 MiB 744 KiB/s 04:34 [######################] 100%
linux-firmware-m... 61.2 MiB 195 KiB/s 05:21 [######################] 100%
perl-5.38.1-1-x86_64 20.2 MiB 62.7 KiB/s 05:31 [######################] 100%
Total (71/71) 415.2 MiB 1286 KiB/s 05:31 [######################] 100%
(71/71) checking keys in keyring [######################] 100%
(71/71) checking package integrity [######################] 100%
error: amd-ucode: signature from "Tobias Powalowski [email protected]" is un known trust
:: File /var/cache/pacman/pkg/amd-ucode-20231110.74158e7a-1-any.pkg.tar.zst is c orrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]

download and delete,always like this

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Ok, I solved the problem, I need to initialize the keyring first

rm -rf /etc/pacman.d/gnupg
pacman-key --init
pacman-key --populate

and updata keyring

pacman -Sy archlinux-keyring

Finally the upgrade was successfully completed

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