I tried the update command and the repos that the error occur on are
“http:////dl-cdn.alpinelinux.org/alpine/3.19/main”
“http:////dl-cdn.alpinelinux.org/alpine/3.19/community”
I don’t get the error on my Pinebook Pro which si also on PostmarketOS 23.12 if that matters.
I use BTRFS on my Artix system, Ext4 on my Librem 5, Ext4 on my Devuan laptop and Ext4 on my Pinebook Pro. Basically when given the choice in the installer I choose BTRFS but if the installer doesn’t let me pick I don’t care enough to manually partition. I have had no negative experiences with any file system luckily so I just roll with whatever.