This site,
http://bluegrasspro.com/oldweb/hotcorn.htm says
copyright 1995, Michael D. Miessen, but this site
http://www.bluegrasslyrics.com/Flattscruggs/s2017.html
says "taken from Flatt and Scruggs".
This site
http://www3.clearlight.com/~acsa/introjs.htm?/~acsa/songfile/HOTCORNC.HTM
says "words and music traditional".

My guess is that it is trad and the arrangement is copyrighted. Happens often.

HOT CORN, COLD CORN

Hot corn cold corn bring along the demijohn
Hot corn cold corn bring along the demijohn
Hot corn cold corn bring along the demijohn
Fare thee well Uncle Bill see you in the morning yes sir

Well it’s upstairs downstairs out in the kitchen (3x)
See you Uncle Bill just a raring and a pitching yes sir

Well it’s old Aunt Peggy won’t you fill ’em up again (3x)
Ain’t had a drink since the lord knows when yes sir

Well yonder comes the preacher and the children are a crying (3x)
Chickens a running and the toenails a flying yes sir

Source: https://www.bluegrasslyrics.com/song/hot-corn-cold-corn/