Though Giuliani had over a thousand affidavits of poll workers and voters attesting to wrongdoing. Doesn't have to be forensic evidence.
There was no way in hell to fix the problem with the 2020 election once the Electoral College vote of mid-December was done. Look what just happened in Arizona: it took about TEN MONTHS for a SINGLE COUNTY to complete a forensic audit that would have been needed in every contested state last year.