Can't the input of fuzz_db be mutated?

[h0rs3fa11]

The program just reads fuzz_db and assigns values to protobuf randomly, right? It means that protofuzz can't be used for fuzzing test, It just scans the target program simply

[jak330]

I have the same problem. ProtoFuzz only apply the values from the fuzz_db without mutation.
Even in the example the fuzzed values are exact the same as the values from the fuzz_db.

But i can´t hardly imagen that´s on purpose, because there are permute() methods.
I tried to read through the script and find the location where the mutation should be happening and why it isn´t applied, but i´m not much proficient in python so i couldn´t find it.

Maybe someone who got it correctly running could point out why we didn´t get any mutation on our values.
(I did exactly copy the example code)