I force-pushed to my branch for which I had an open pull request. The plugin didn't pick up my change. When I asked `retest this please`, the build was triggered but no status was added to my commits. It looks like the old shas were used.

Here's the parameters I got:

sha1:origin/pr/464/merge
ghprbActualCommit: 285f72ae5b7b6c9460ccb6fc922789dba4cef2ad
ghprbPullId: 464
ghprbTargetBranch: master

The actual commit is the previous one (before my push --force). As a result, the pull request (and all its commits) has no build status.