Would you happen to have any more photos of this plant, or others nearby? This appears to be a Prasophyllum in the patens/odoratum complex. Many species in this complex are currently undescribed. This one looks quite similar to the recently described species Prasophyllum jeaneganiae.
Hmm this is an interesting sighting! I don't think we can quite tell from the photos, but certainly in that group. I can't see any problems with it being P jeaneganiae, although confirmation would require closer examination of the labellum I think.