Input buildinfo: https://buildinfos.debian.net/buildinfo-pool/p/purity/purity_1-19_amd64.buildinfo
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New buildinfo file: /tmp/purity-1-198jw8qzbu/purity_1-19_amd64.buildinfo
Get source package info: purity=1-19
Source URL: http://snapshot.notset.fr/mr/package/purity/1-19/srcfiles?fileinfo=1
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