Comment by JdeBP

Tip: Debian provides browsable source repositories so it is usually easy to find out whether something is a local Debian change.

* https://packages.debian.org/source/sid/nginx

* https://salsa.debian.org/nginx-team/nginx/-/commit/3e7838a6b...

* https://salsa.debian.org/nginx-team/nginx/-/merge_requests/8...