minecraft-src/assets/minecraft/blockstates/podzol.json

{
  "variants": {
    "snowy=false": [
      {
        "model": "minecraft:block/podzol"
      },
      {
        "model": "minecraft:block/podzol",
        "y": 90
      },
      {
        "model": "minecraft:block/podzol",
        "y": 180
      },
      {
        "model": "minecraft:block/podzol",
        "y": 270
      }
    ],
    "snowy=true": {
      "model": "minecraft:block/grass_block_snow"
    }
  }
}