I want to apologize as I did not realize this was no longer possible using the Add-on nmcli command not found · Issue #891 · hassio-addons/addon-ssh
Seems the only way now is to create an SSH debug port. You can try this 
[add-on] HassOS SSH port 22222 Configurator - Installation / Home Assistant OS - Home Assistant Community
I run HA OS in a VM on Proxmox so normally have access to the Console even remotely, so not sure if the above will work.