def METHOD_NAME(red_green):
    """Force ignore existing overviews when performing decimated read"""
    # Corrupt overview of red file by replacing red.tif.ovr with
    # green.tif.ovr.  We have a GDAL overview reading bug if green
    # pixels appear in a decimated read.
    green_ovr = red_green.join("green.tif.ovr")
    green_ovr.move(red_green.join("red.tif.ovr"))
    assert not green_ovr.exists()
    # Read the corrupted red overview.
    with rasterio.open(str(red_green.join("red.tif.ovr"))) as ovr:
        ovr_data = ovr.read(2)
        ovr_shape = ovr_data.shape
        assert (ovr_data == 204).all()  # Green pixels in band 2
    # Perform decimated read and ensure no use of file overview
    # (different from corrupted).
    with rasterio.open(str(red_green.join("red.tif")), OVERVIEW_LEVEL="NONE") as src:
        decimated_data = src.read(2, out_shape=ovr_shape)
        assert not np.array_equal(ovr_data, decimated_data)