Is it possible to update the source code on Github? It's just that the source code doesn't match the mod files anymore, it feels like the source code version is 1.2.4, and the current version is 1.2.6.

I just use the code from your mod to create my own, at one point I rachel incompatibility of some mod with mine, went to check FD with that mod and that incompatibility was not, most likely the incompatibility was because the code is not up to date.

The source code here is always the latest; it can't actually be outdated. However, the only active versions of FD are the branches 1.20 and 1.21, and no others.

Are you forking 1.20.4, per chance? That version is abandoned.

Nope, I'm working on 1.20.1. I assumed it was out-dated, since the PieBlock on the github and the decompiled version of the mod I decompiled are different.