I could be wrong, but I don’t think this is an actual Pennsylvania Senate hearing. I think the Senate Majority Policy Committee is an organ of the Senate’s Republican caucus, not the Senate itself.
I believe that you are correct:
Wednesday, November 25, 2020: At the request of Senator Doug Mastriano (R-Adams/Cumberland/Franklin/York), the Senate Majority Policy Committee is holding a public hearing Wednesday to discuss 2020 election issues and irregularities. The hearing will feature former New York City Mayor Rudy Giuliani.
WHO: Senate Majority Policy Committee Chair David Argall (R-Berks/Schuylkill); Senate Majority Leader-Elect Kim Ward (R-39); State Rep. Dan Moul (R-91); State Rep. Rob Kauffman (R-89); and State Rep Paul Schemel (R-90); among other lawmakers will join Senator Mastriano in this historic hearing.