Correctly represent hex ids

def to_chunked_hex(i: int) -> str:

    i_hex = hex(i).removeprefix("0x")

    chunks = re.findall(r"..", i_hex)

    # We want to pad the hex string to even length, so we can extract chunks of 2

    nearest_even_length = len(i_hex) + len(i_hex) % 2

    i_hex_padded = i_hex.rjust(nearest_even_length, "0")

    chunks = re.findall(r"..", i_hex_padded)

    return ":".join(chunks)