Database
[{_id:123,someDate:ISODate("2022-10-24T17:21:44.980Z"),something:true,hello:"world"}]
Query
db.collection.aggregate([{$match:{something:true}},{$project:{_id:1,someDate:{$dateToString:{format:"%Y-%m-%dT%H:%M:%S:%LZ",date:"$someDate"}},something:1,hello:1}}])