rev-list --ancestry-path with arg - bug or undocumented requirement

What did you do before the bug happened? (Steps to reproduce your issue)
Create a toy repo with commits in the following structure:
A - B - C
     \
      D

Run `git rev-list --ancestry-path=D A..C`.

What did you expect to happen? (Expected behavior) Commits A and B should be listed.

What happened instead? (Actual behavior) No commits listed.

What's different between what you expected and what actually happened? --ancestry-path with a commit arg seems to return 0 results unless the specified commit is itself part of the range. The rev-list documentation does not mention that this is a requirement.

[System Info]
git version:
git version 2.47.0.338.g60cca15819-goog
cpu: x86_64
no commit associated with this build
sizeof-long: 8
sizeof-size_t: 8
shell-path: /bin/sh
libcurl: 8.8.0
OpenSSL: OpenSSL 3.3.2 3 Sep 2024
zlib: 1.3
compiler info: gnuc: 13.2
libc info: glibc: 2.38
$SHELL (typically, interactive shell): /bin/bash

[Enabled Hooks] commit-msg pre-commit prepare-commit-msg