Input buildinfo: https://buildinfos.debian.net/buildinfo-pool/n/nss/nss_3.73-1_amd64.buildinfo
Use metasnap for getting required timestamps
New buildinfo file: /tmp/nss-3.73-1q5r93z4b/nss_3.73-1_amd64.buildinfo
Get source package info: nss=2:3.73-1
Source URL: http://snapshot.notset.fr/mr/package/nss/2:3.73-1/srcfiles?fileinfo=1
No source info found for nss-2:3.73-1