I took a look at the output from task-rpmgrill found at https://pagure.io/taskotron/task-rpmgrill

See this:

- artifact: /var/lib/taskotron/artifacts/20170920_151415_782937/rpmgrill.json
  checkname: rpmgrill
  item: sed-4.4-1.fc26
  outcome: PASSED
  type: koji_build

Notice the checkname. I'm pretty sure that this is used to construct the testcase name in resultsdb, which is a required thing for gating to eventually make use of this stuff (and this stuff is awesome, so we want that).

Here's the current output of this task:

- item: sed-4.4-1.fc26
  note: dist-git tests for sed finished with result PASSED
  outcome: PASSED
  type: koji_build

A simple hardcoded checkname of distgit would probably do it.

If we have more granularity about what the names of the individual test cases are, that would be awesome -- but don't block on that.