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QQ. I would expect this command to print the following:

```$ echo test &gt;&gt; my-python-file.py
$ pants --changed-since=dev --peek-include-dep-rules peek | jq '.[].target_type'
"pex_binary" [MISSING]
"docker_image" [MISSING]
"python_source"```
But as noted, both pex_binary and docker_image are missing. They aren't in _dependents_rules either.

Looks like I can run `pants --changed-since=HEAD dependents --dependents-transitive` though, and get the upstream. then i need to run pants again to figure out which targets are of the right type, or ensure my docker_image targets names are greppable/unique, or always publish

You can `--changed-dependents=transitive`

Oh i can also use `--filter-target-type=docker_image` to just find all the changed docker images!!