HR people often attract unwanted management attention if they can't fill vacancies internally - managers don't like going to the external market, especially at the moment. So they probably don't have anyone immediately suitable so are looking at a more innovative solution.
I don't want to put the OP off though, worst that can happen is they say no right? Personally I think that the right attitude and experience is often more valuable than ticking the right skills boxes. I wish HR would wake up to this.