This was a relatively simple puzzle, and most people told me that they were able to do this in less than a minute. Pawan Nijhawan from Udaipur was the first one to come back with a correct answers. Others included Muskaan Mittal, Ival Sallay and Deepak Goyal. Well done!
Solution is to take the right (or the back) leg of the giraffe and putting it at the bottom. If you rotate the new image clockwise by 90 degrees, it will be a mirror image of the original image. Here is the solution graphic which has been picked up directly from the original New York Times answer:
Hope you enjoyed the puzzle!