jq https://stedolan.github.io/jq/ filter to transform GeoJSON Geometry Collection into Feature Collection

filter.jq

.properties as $propertiess | {
    "type": "FeatureCollection",
    "features": [

        (.geometries[] |
         {
             "type": "Feature",
             "properties": (.properties + $propertiess),
             "geometry": del(.properties)
         }
        )
    ]
}

run_filter.sh

cat geom_collection.json | jq -f filter.jq