"Any tips to figure it out?"
Try to go to a dispensary that buys grower direct. Most growers aren’t going to waste their time growing something for 3-4 months without knowing what strain it is. Dispensaries that buy grower direct tend to have more control over what their product is. Also dispensaries that lab test their flowers are usually more reliable. Og has a very distinct smell, and you’ll be able to identify it with that sense after awhile