Question: How to find the commits in the ancestry path of seen down to _and_ including a given topic?

A simple question that I'm spinning out of [1]: How can I get `git log` to show the commits in the ancestry path from seen, back to *and including* a given topic (but not commits from unrelated topics)?

   git log --ancestry-path $TOPIC..seen

doesn't work, because that excludes $TOPIC. (It does get me the merge of $TOPIC into seen, as well as all merges into seen following that merge, which I want, but it's missing the topic itself.)

  git log --ancestry-path $BASE_OF_TOPIC..seen

usually doesn't work, because $BASE_OF_TOPIC is usually a commit from "main" or "master", and this results in pulling in hundreds of commits from unrelated topics that also happen to be based on a version of "main" or "master" at or after $BASE_OF_TOPIC.

Is there some magic that does what I want, or is this just not possible currently?

Thanks, Elijah

[1] https://lore.kernel.org/git/CABPp-BHARfYcsEM7Daeb7+vYxeB9Awo8=qbrOMXG6BQ0gX1RiA@mail.gmail.com/