loongson/mirror: links for demucs

loongson/mirror demucs-4.0.1.tar.gz
loongson/mirror demucs-4.0.0.tar.gz
loongson/mirror demucs-3.0.6.tar.gz
loongson/mirror demucs-3.0.5.tar.gz
loongson/mirror demucs-3.0.4.tar.gz
loongson/mirror demucs-3.0.3.tar.gz
loongson/mirror demucs-3.0.2.tar.gz
loongson/mirror demucs-3.0.1.tar.gz
loongson/mirror demucs-3.0.0.tar.gz
loongson/mirror demucs-2.0.3.tar.gz
loongson/mirror demucs-2.0.2.tar.gz
loongson/mirror demucs-2.0.1.tar.gz
loongson/mirror demucs-2.0.0.tar.gz
loongson/mirror demucs-0.0.2.tar.gz
loongson/mirror demucs-0.0.1.tar.gz
loongson/mirror demucs-0.0.0.tar.gz