with rasterio.open("B01.jp2") as src:

    with MemoryFile() as memfile:

        with memfile.open(**src.profile) as mem:

            print(mem.meta)

            mem.write(src.read())

 

        with open("test.jp2", "wb") as f:

            f.write(memfile.read())

 

with rasterio.open("test.jp2") as src:

    print(src.meta)

 

# {'driver': 'JP2OpenJPEG', 'dtype': 'uint16', 'nodata': None, 'width': 1830, 'height': 1830, 'count': 1, 'crs': CRS.from_epsg(32707), 'transform': Affine(60.0, 0.0, 600000.0, 0.0, -60.0, 7100020.0)}

# {'driver': 'JP2OpenJPEG', 'dtype': 'uint16', 'nodata': None, 'width': 1830, 'height': 1830, 'count': 1, 'crs': None, 'transform': Affine(1.0, 0.0, 0.0, 0.0, 1.0, 0.0)}