I thought the Girondin, were a political grouping during the Revolution, who ended up on the wrong end of the Terror.
Not quite the same colour as Lens' sange et or.....blood and gold, but could be a river of blood.
Ah, les Enoch de Bordeaux.
Didn't know the revolutionary reference - your historical knowledge is, as ever, impeccable. I assumed the club name simply derives from the river that runs through the city, and the name of the département of which Bordeaux is the administrative capital.
Not far away is the rugby town of Castres, whose players (and inhabitants) are known as Castrais - which sounds the same as the word for castrated. Hardly a rallying cry, you'd think.