In the field, I assumed this was H pedunculata but then later I found the key for Hibbertia in PlantNet and in VicFlora is in such disarray and currently under review, making it impossible to revise or review any ID.
The local Hibbertia that used to be called pedunculata is now named porcata, after Tolken. There is a list of localties under his description. The Tolken key seems quite straightforward. I don't seem to have a location for this sighting. Its common in the Sutton road escarpment and in the Dalton area.