gate-repeat
An advisory: it explains, and blocks nothing, on the gate run again soon after it passed, repeating work already done.
What it catches
The gate run again soon after it passed, repeating work already done.
Seeing it
A verdict names its rule in brackets, which is how you got here:
advise [gate-repeat]: ...
magus describe rule gate-repeat prints the same entry at a terminal, and
magus describe rules lists every rule this workspace enforces.