Digging

About 1.75 year old gsd cross and around 100lbs. Can dig a pretty big hole in short time.
he doesn’t seem to do it out of boredom. But when he’s hyper and worked up playing with the other dog. I pull him out of the hole by the scruff, put him in a down and give him shit, but he just looks at me panting and smiling. Looks like he’s saying “check out my awesome hole”, then he will run right back into it.
Swould i leave a leash and print collar on him in the yard and give him a stern correction when he digs? E collar? What has worked for you?

Both dogs get at least a 1-2 hour walk/hike a day, plus play time.