[arch-general] mkinitcpio debugging with systemd

Hello! I am running a initrd make with mkinitcpio using the "systemd" hook. This works great in general, but after a bit of playing with the hooks and systemd code the generated initrd will no longer start. That is no big deal and entirely my fault and I should be able to fix it. My problem is now that I can not really debug the initrd anymore. Is there a way to get a debug shell on the initrd when using the systemd hook? Any hints would be greatly appreciated:-) Best Regards, Tobias