Superman & Lois S01E11: "A Brief Reminiscence In-Between Cataclysmic Events"
The episode leans heavily into the past, providing the first comprehensive look at Clark Kent’s origin on Earth-Prime.
: Upon returning to Smallville, Martha Kent gives Clark a suit she made herself. This "homemade" look, complete with the Fleischer-style crest, serves as his first uniform for his early days in Metropolis.