Job not being it’s description

Hey everyone!

First time posting here - I just had a question/ need advice.

I applied for a job (junior role) and got an initial interview during which I realised that what was advertised and what they actually wanted did not match.

The role said ‘desirable skill to have but not necessary: motion’. Now in the actual interview I was honest said that I had very little experience with it except for the odd tiny project. Realistically I know it would take me double the amount of time as someone who’s actually trained in motion to do anything. The interviewer then said the motion part of the role was actually 40 to 60% of the role and that the role was mostly independent work.

I’ve been asked to come for another interview that includes a task. I will of course be doing my best but I don’t think I’m a right fit for the role as I wouldn’t be able to hit the ground running. However in the current job market I feel like telling them ahead of the interview is more of a disservice to myself (I was quite clear about it in my first interview) and I would rather get rejected after having given it my all.

Has anyone been in a similar situation? Have you got any advice?