Input buildinfo: https://buildinfos.debian.net/buildinfo-pool/g/giac/giac_1.7.0.39+dfsg2-1+b1_amd64.buildinfo
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Get source package info: giac=1.7.0.39+dfsg2-1
Source URL: http://snapshot.notset.fr/mr/package/giac/1.7.0.39+dfsg2-1/srcfiles?fileinfo=1
No source info found for giac-1.7.0.39+dfsg2-1