Input buildinfo: https://buildinfos.debian.net/buildinfo-pool/r/r-cran-usethis/r-cran-usethis_2.1.5-1_all.buildinfo
Use metasnap for getting required timestamps
New buildinfo file: /tmp/r-cran-usethis-2.1.5-1g8q0reuu/r-cran-usethis_2.1.5-1_all.buildinfo
Get source package info: r-cran-usethis=2.1.5-1
Source URL: http://snapshot.notset.fr/mr/package/r-cran-usethis/2.1.5-1/srcfiles?fileinfo=1
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