The thought intrigued me enough to check with a native Korean speaking friend, and they said that cloning doesn't necessarily translate well and it could have been a question about the size of AlphaGo (in terms of copying it or the datasets) or its reproducability / iterations (i.e. are there v1.01, v1.02's floating around).
There have been a couple of brief discussions of this in the Open Thread, but it seems likely to generate more so here's a place for it.
The original paper in Nature about AlphaGo.
Google Asia Pacific blog, where results will be posted. DeepMind's YouTube channel, where the games are being live-streamed.
Discussion on Hacker News after AlphaGo's win of the first game.