Although the computer disapproves this novelty it has a lot of merits. First, it breaks the symmetry, which is good for the bishop pair. Second, it opens the  e-file for the white rook, where especially pleasant is the outpost on e5. And last, but not least- every novelty has psychological value.
1. g1f3  1... d7d5  2. g2g3  2... c7c6  3. f1g2  3... c8g4  4. e1g1  4... b8d7  5. h2h3  5... g4h5  6. d2d4  6... e7e6  7. c2c4  7... f8e7  8. c4d5  8... e6d5  9. b1c3  9... h5f3 