wget writes a ~/.wget-hsts file with the HSTS information for any URI you have accessed that served an HSTS header. Making it ignore --no-check-certificate if

wget writes a ~/.wget-hsts file with the HSTS information for any URI you have accessed that served an HSTS header. Making it ignore --no-check-certificate if the file has an entry for the hostname you are visiting should be trivial, if it hasn't been done already.