Ah. A bit of searching and I found this thread about enabling SSH. So, if you mount the SD card in another Linux system, try removing etc/ssh/sshd_not_to_be_run and see if that’s enough.
If that’s not enough, I can also check for you how to do a systemd enable from another system by just changing the file system.
EDIT: Just tested doing that only without touching the systemd commands, and SSH seems to be up on a fresh install.