  Hyperluminous optical-ultraviolet fares have been detected in gamma-ray
bursts and the luminosity record was held by naked-eye event GRB 080319B. Such
fares are widely attributed to internal shock or external reverse shock
radiation. Here, with a new method developed to derive reliable photometry from
saturated sources of Swift/UVOT, we carry out time-resolved analysis of the
initial white-band 150s exposure of GRB 220101A, a burst at a redshift of
4.618, and report a rapidly evolving optical-ultraviolet fare with a high
absolute AB magnitude of -39.4$\pm$0.2. In contrast to GRB 080319B, the
temporal behaviour of this new fare does not trace the gamma-ray activity.
Instead of either internal shocks or reverse shock, this extremely energetic
optical-ultraviolet fare is most likely to originate from the refreshed shocks
induced by the late-ejected extremely energetic material catching up with the
earlier-launched decelerating outflow. This finding reveals the diverse origins
of the extremely energetic optical-ultraviolet fares and demonstrates the
necessity of high-time-resolution observations at early times.
