This is an example task for Taskotron that functions but doesn't actually do any useful work.
The task takes in a koji build nvr, does nothing with it and creates an empty file in the artifacts directory as a made-up task result.
Standalone you can run it like this:
$ ./run_exampleartifacts.py bacula-7.4.7-1.fc26 x86_64
Through taskotron runner you can run it like this:
$ runtask -i bacula-7.4.7-1.fc26 -t koji_build -a x86_64 runtask.yml