I think I have evidence that this feature is not working. Have several feature branches that have approved and merged pull requests to develop, however develop is not listed a refence that contains the commit.
When I do a git blame on the source file in develop, it shows the commit in that branch.
I have Tortoise 2.14.0 and Git 2.30.0 on windows 11.
I will update Git to 2.39.2 and see if it behaves differently.