Input buildinfo: https://buildinfos.debian.net/buildinfo-pool/g/gthumb/gthumb_3.12.2-1_all.buildinfo
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Get source package info: gthumb=3:3.12.2-1
Source URL: http://snapshot.notset.fr/mr/package/gthumb/3:3.12.2-1/srcfiles?fileinfo=1
No source info found for gthumb-3:3.12.2-1