I'm new to the getz family but there is a reservoir next to the firewall behind the aircleaner box.( so on the left). Assume is a right hand drive from your name. Not sure if this is clutch or brake.
My spare tyre kit has a funnel and tube that came with the car for topping this up.
If you follow the hose/tube from the right firewall master cylinder.
Mine is a 2011 1.6.
Hope this helps, if it's crap info please let me know.