- Created a task
- Created a diff and associated it to the task
- Rebased the commit but did **//not//** `arc diff` to update the diff
- Pushed the commit
- Used `bin/differential attach-commit` to attach the commit to the diff
- Navigated to the task and the commit was correctly shown with the Differential revision beside it in the Commits section (Dxxx / rFOOBAR) rather than having the commit and revision listed separately