krb5_get_init_creds_opt_init(3) on Linux
The text 5fe2a33a8215, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
Kerberos 5 initial authentication functions