"This has to be in the category of You Can't Make This Up. When my dad introduced me to his gf and her son it was like looking in the mirror. Come to find out my dad was in college he sold sperm to make extra money. So we're actually halfbrothers. Now we share a bedroom and the only way to tell us apart is I'm cut and he's not. I never seen a foreskin before and asked him if I could touch it. He started to get a boner and that fascinated me even more. Before we knew both our dicks were hard and we ended sucking each other off. He wants to make it so we are perfectly alike and the only way to do it is for him to get circumsized. How does a dick heal up after that do they put stitches on it?"
Well, you're right. That belongs in Truth Is Stranger Than Fiction. But how strongly does he feel about getting circumcised? I'd urge him to not follow through on that because he's doing it for esthetics (for looks). If there was a real medical situation, it'd be different.
The foreskin is loaded with nerve endings. Not to mention it's there to help keep the cockhead soft and supple.
But to answer your question, yes. The remaining skin is stitched together to close the wound.
According to MedicinePlus.gov:
"The foreskin is removed and stitched onto the remaining skin of the penis. Stitches that dissolve are used to close the wound. They will be absorbed by the body within 7 to 10 days. The wound may take up to 3 weeks to heal."
Urge him to keep his cock exactly as it is.