Gonna break rank here and say this is unnecessary.
Hong Kong competes in sporting events under the Hong Kong SAR flag, not the PRC flag. It’s not a stretch for street fighter to follow that rule.
That aside, the HK flag looks dope, and it’s cool to have different parts of China represented in media. It’s a huge and diverse place, and all too often it’s viewed as homogenous.
A more tasteful way of signalling acknowledgement of PRC sovereignty over HK would be to make the name ‘HK, China’ or ‘HK SAR’.