The difference between Qwen2.5-0.5B and CosyVoice2-0.5B/CosyVoice-BlankEN?

[bfs18]

I'm investigating the differences between Qwen2.5-0.5B and CosyVoice2-0.5B/CosyVoice-BlankEN. While both model.safetensors files have identical sizes, they have different md5sum values. According to the CosyVoice2 paper, the model was initialized with Qwen2.5-0.5B weights. Could you please clarify the specific modifications made to the Qwen2.5-0.5B model during the development of CosyVoice2-0.5B/CosyVoice-BlankEN?