minecraft-kajetans-mod/src/main/resources/assets/km/blockstates/real_hay_block.json

{
    "variants": {
        "axis=y": { "model": "km:block/real_hay" },
        "axis=z": { "model": "km:block/real_hay", "x": 90 },
        "axis=x": { "model": "km:block/real_hay", "x": 90, "y": 90 }
    }
}