File lib/libc/stdlib/getopt_long.c SPDX-License-Identifier-tag is marked as BSD-2-Clause AND LicenseRef-scancode-sudo as the license text is matching but it can be also 0BSD license.
Why it's LicenseRef-scancode-sudo and not 0BSD is there is text in first license block:
* Sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F39502-99-1-0512.
Sponsored by: The FreeBSD Foundation