We have a project with a git submodule but it doesn't seem to be picked up by

--changed-since

➜  platform git:(main) ✗ git diff HEAD~1 | cat
diff --git a/attendee/attendee-repo b/attendee/attendee-repo
index 8385791..672fa8c 160000
--- a/attendee/attendee-repo
+++ b/attendee/attendee-repo
@@ -1 +1 @@
-Subproject commit 8385791c33bdef6c17953f5ba356413b5d329013
+Subproject commit 672fa8c7f007562ee030cc3ec1f954a007995672

➜  platform git:(main) ✗ git diff --name-only HEAD~1 | cat
attendee/attendee-repo

➜  platform git:(main) ✗ pants \
              --changed-since=HEAD~1 \
              --changed-dependents=transitive \
              list
circleci-etl:docker-image
circleci-etl/circleci_etl/job_tests.py:../image-files
circleci-etl/circleci_etl/job_tests.py