Run command on the LiveUSB environment:
$ sudo dd if=/dev/nvme0n1 bs=256M status=progress | pigz-c-p 4 | ssh [user]@[host] "gunzip -c > /mnt/disks/dev-nvme0n1.img"
$ qemu-img convert -f raw -O qcow2 /mnt/disks/dev-nvme0n1.img /mnt/disks/dev-nvme0n1.qcow2