import onnx

input_path = "yolov8s.onnx"
output_path = "yolov8s-cut.onnx"
input_names = ["images"]
output_names = ["/model.22/Concat_output_0", 
                "/model.22/Concat_1_output_0", 
                "/model.22/Concat_2_output_0",]

onnx.utils.extract_model(input_path, output_path, input_names, output_names)