Here's the message to send to control@ to make the BTS display a sorted view of bugs related to reproducible builds:
user reproducible-builds@lists.alioth.debian.org usercategory variation-sources * Source of variation between builds [tag=] + Record time of build [timestamps] + Change with readdir() order [fileordering] + Record source paths [buildpath] + Record username [username] + Record hostname [hostname] + Record uname [uname] + Record environment variables [environment] + Build uses (pseudo-)randomness [randomness] + Change with CPU features or usage [cpu] + Build uses cryptographic signatures [signatures] + Permissions depend on umask [umask] + .buildinfo control files [buildinfo] + Fails to build from source [ftbfs] + Locale-dependent behavior [locale] + Uncategorized [] usercategory impact * Impact size [tag=] + Tools used by other packages [toolchain] + Debian infrastructure [infrastructure] + Single package [] usercategory normal * variation-sources * impact thanks