Cal Football -- #TBT FAIL ... Claims Victory In Game They Lost

Talk about revisionist history ... the Cal Golden Bears posted a little #TBT Thursday -- reminiscing about the time Marshawn Lynch led Cal over Oregon in overtime back in 2005.

Problem is ... it didn't really happen that way.

Fact is ... #23 Cal LOST to #15 Oregon 27-20 thanks to a 4-yard TD pass from Brady Leaf in OT.

Lynch had 2 touchdowns of his own that game ... but definitely no game winning heroics.