Trying calculate Zonal_stats using mosaic and H3

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I am trying to calculate Zonal_stats for raster data using mosaic and H3. Created dataframe from geometry data to H3 index. While previously I was calculating Zonal_stats using rasterio, tif file, geometry data in python which is slow. Now want to explore mosaic and H3 index. In my case, I need to calculate Zonal_stats for each geometry point. Any idea if this function exists in Mosaic?