I don't understand why you would even do that job if you think petty bullshit like that matters in these circumstances. Uniform isn't on anyone's radar at my school except where it might indicate families are struggling to provide suitable clothes. We have a kid whose family are refugees starting on Monday, his parents were worried about uniform, bless them. We gave them a blazer and a tie and said don't worry about the rest of it. I can't imagine why any school would be doing anything else right now.
Our staff briefing was basically an hour of pastoral stuff - encouraging everyone to always use positive language about kids learning despite what they may or may not have achieved over lockdown, what we might be doing about Y11 & Y13 mocks and finally to get everyone in the mood a full briefing of all the many safeguarding issues our children have experienced since we were last in the building. Sometimes I feel really really lucky to be working where I do.