This would serve as a good workaround for the lack of clipboard and the default annoyiance of mouse capture!
I don't see how to get it working out of box immediately, but after you do on guest:then the host terminal tells you the ssh command e.g.:and that worked. You can also quickemu with:to not get any annoying GUI.
sudo apt install openssh-server
ssh user@localhost -p 22220
quickemu --display none