Archlinux on UTM on an apple M3 Pro

From UTM download the arch template

right-click/show in finder on the Archlinux machine in UTM Find the disk
mine is on /Users/warnaud/Library/Containers/com.utmapp.UTM/Data/Documents/Archlinux.utm/Data/BB208CBD-BFB4-4895-9542-48527C9E5473.qcow2

qemu-img resize BB208CBD-BFB4-4895-9542-48527C9E5473.qcow2 +41G # replace with the name of your disk / adapt the size

boot archlinux