In English, we have the expression To-may-toh, to-mah-toh to kind of say "either either". Is there and equivalent expression in French?
You could use
C'est du pareil au même
The meaning is basically equivalent to saying "there is no difference".
A fairly old-fashioned one is "c'est blanc bonnet et bonnet blanc" (literally "hat of white and white hat"), which has the same meaning as "six of one, hald a dozen of the other".