Probably just pre-flowers, its unlikely that you got an auto as a clone even from a completely random source. I have the same thing happening with some of my girls in my last few runs. What happens is when you take a cutting, once rooted it assumes the same maturity level of the plant that it was cut from. Several runs ago I ended up taking my cuttings from very mature plants so they have been showing pre-flowers very early in veg. I'm seeing pre flowers in the first couple weeks of an 8 week veg cycle and it's actually improved my grow quality. It seems to make the plants grow bushier with less need for topping, and it also is producing many more mature buds in my final flowering. I'm getting quality solid buds from lower unexpected branches on my plant that I didn't previously get.
Now if they keep maturing into buds further than what you see of just the pistils, then you are encountering something I've not seen as I've never grown an auto or had a plant get shocked into flowering completely before switching to 12/12.
Also as a side note, check those lower leaves, looks like you have spider mites. Pretty easy treatment with such a small baby, but could get out of hand if left unchecked.
