"sgl-router/git@developer.sourcefind.cn:zhaoyu6/sglang.git" did not exist on "4093d460ce3153319a9529033c2e63c861793ea1"
When building torchaudio from source, `get_version.sh` from kaldi is executed everytime, which results in kaldi-bindings to be always rebuilt. This commit add "if" guard to the part so that they are not always executed.