After the merge of #12971, gitian builds are no longer producing deterministic binaries/packages for any build that includes the Qt GUI front-end.
This is due to a semi-recent change to Qt's rcc tool that embeds any input file's last modified time into it's resulting output (src/qt/qrc_bitcoin_locale.cpp in this case). Since the build system dynamically generates the translation locale .qm files at build time, the resulting qt_libbitcoinqt_a-qrc_bitcoin_locale.o is never deterministic.
Here is a comparison of some recent master branch gitian builds:
Run 1:
c7270b97ec1457acc5802ad60e8b9a2319b462d2109ec4191c83e0871d2b8322 bitcoin-0.16.99-aarch64-linux-gnu-debug.tar.gz
227f958ce4e68f72ecc950c186f88cf53561be640ab6def5f48bdcb48e3d42db bitcoin-0.16.99-aarch64-linux-gnu.tar.gz
a8de05932cba825f66a9390bd029b852e8a5d4b77712f3b1612a61c619abdfc3 bitcoin-0.16.99-arm-linux-gnueabihf-debug.tar.gz
4c4a8064ab99b3ff9c1eba9302239f2d88847467bdcdb789adbd4154414f034b bitcoin-0.16.99-arm-linux-gnueabihf.tar.gz
aec0618497ff5f6d34f3c3e0d652e46dda6371b1186a800fb89156a6c5c00d96 bitcoin-0.16.99-i686-pc-linux-gnu-debug.tar.gz
d6b664b35dd0e77e16f65545e5a690e56b3fb381804edb516e747c7eb17f5a27 bitcoin-0.16.99-i686-pc-linux-gnu.tar.gz
80bd22bdc4f0dc8f72f09cb17cece23484957e31a7a7dc8a070497a36700b6ad bitcoin-0.16.99-x86_64-linux-gnu-debug.tar.gz
d288019698fa2fb027c808f27f3f9a63aaef9aff353da74eb09be1c614d8a880 bitcoin-0.16.99-x86_64-linux-gnu.tar.gz
4e2a441838213ecae35db1824e05a23e7f026f0b3fbf144460c4735d6ab41c21 src/bitcoin-0.16.99.tar.gz
543193a2ca8dadf582dc1f3af47bae52ba8f2a8604f3b64140fe40853e1c0063 bitcoin-linux-0.17-res.yml
cc27376dd3c55b0a2596b5d7d85c352ebf572bdfdeec6b3d33be8e4e4b77df09 bitcoin-0.16.99-win-unsigned.tar.gz
9dafad0dad4d4a77ad60f0c1f545aeabf88fa7a3a5c73cc6b849ef474af9a888 bitcoin-0.16.99-win32-debug.zip
9f7ffb4caedcf2015dede00f1f8c74e2c0949b55869597807738736d2858d31b bitcoin-0.16.99-win32-setup-unsigned.exe
528292fc66ef2aa2944de9b89af669029141671ef6d823b8a485b5bc7a159881 bitcoin-0.16.99-win32.zip
18f7169d56a798df9a117eed001b73d25dbdcf3a9c0e2611eabb324c50cb4edc bitcoin-0.16.99-win64-debug.zip
702edd07ef957bfb316cf80ca5ef0d9fcd22dfc3ae15dd615522ace6a2d13266 bitcoin-0.16.99-win64-setup-unsigned.exe
e2f0a004773c2745f7289f7f2afb33a1bd1d1d47d0fc3a69c38bed1686597fb6 bitcoin-0.16.99-win64.zip
0bf23ac04ca0b4866293306bdd2639d23947ca333a0ffa14625aa33ab718f9a3 src/bitcoin-0.16.99.tar.gz
982efe98d1221572201cae35008f8cac4163e7a3b896249b89e4449abce192bc bitcoin-win-0.17-res.yml
0efe1c0e036678732f7b8d4c2829587f338663d68b1a5eedac6d3601e3f386d8 bitcoin-0.16.99-osx-unsigned.dmg
86881a72a3795149fb94ebe7bc28caa8979ed33b470b8a36a1cda315de8e7fe8 bitcoin-0.16.99-osx-unsigned.tar.gz
4d7cca92ec8ee4bdbaafffe4c182bbff81070d1a8b575741cb805118035c9301 bitcoin-0.16.99-osx64.tar.gz
4e2a441838213ecae35db1824e05a23e7f026f0b3fbf144460c4735d6ab41c21 src/bitcoin-0.16.99.tar.gz
df18dba7e9c8803ea8d803114a86dcab36f3fe6de27afe56ae4280e58ccb772a bitcoin-osx-0.17-res.yml
Run 2:
c7270b97ec1457acc5802ad60e8b9a2319b462d2109ec4191c83e0871d2b8322 bitcoin-0.16.99-aarch64-linux-gnu-debug.tar.gz
227f958ce4e68f72ecc950c186f88cf53561be640ab6def5f48bdcb48e3d42db bitcoin-0.16.99-aarch64-linux-gnu.tar.gz
3dce6a11640462d1dd6eb4fd81cce72f039624402d6bc87a52ff04e88013dee1 bitcoin-0.16.99-arm-linux-gnueabihf-debug.tar.gz
049e59a8d01add4686752f66c926f0b99da86a09240250c4aa794d3a112c665c bitcoin-0.16.99-arm-linux-gnueabihf.tar.gz
4d80143e06882292da6d8cf6f36c430fcabbc0bf78a8134f57dfd570dbe3817f bitcoin-0.16.99-i686-pc-linux-gnu-debug.tar.gz
475702c7fe1c9aa93b25e91e85c25ee5151c70886f3ebae7dab48b846393cad6 bitcoin-0.16.99-i686-pc-linux-gnu.tar.gz
54027c60d704cfaa078f60115aecb5b733e102260a643c87c2bd671d5fceefda bitcoin-0.16.99-x86_64-linux-gnu-debug.tar.gz
56df0a3bd628bed319faac3131290642ba16edae78b82c5a635ba74cf6eb2b72 bitcoin-0.16.99-x86_64-linux-gnu.tar.gz
4e2a441838213ecae35db1824e05a23e7f026f0b3fbf144460c4735d6ab41c21 src/bitcoin-0.16.99.tar.gz
868847616c91849bd8fb3e22ffbee3296756d9333315ae5804769e6334ef8dc0 bitcoin-linux-0.17-res.yml
9fa81924675890294072d8ef82339ebd9b759f9f8a243c5ba34edabb462e99ac bitcoin-0.16.99-win-unsigned.tar.gz
9dafad0dad4d4a77ad60f0c1f545aeabf88fa7a3a5c73cc6b849ef474af9a888 bitcoin-0.16.99-win32-debug.zip
9ded631625b6efddb779a5bd4ba5fd64ebc5d424251d180d36f25992defbb777 bitcoin-0.16.99-win32-setup-unsigned.exe
e2483927f3303c07f3dbe446b9228bf6d10dccbeb28df762ddbf74df5bb99245 bitcoin-0.16.99-win32.zip
18f7169d56a798df9a117eed001b73d25dbdcf3a9c0e2611eabb324c50cb4edc bitcoin-0.16.99-win64-debug.zip
88d9a6e40d60fe96a601b304634f70bfd1c3792e73ac88019bbfc0fd56971423 bitcoin-0.16.99-win64-setup-unsigned.exe
3774aae37404866ebfe628bec65d3bae8ab5e26d1396383083d493a16cd7e6ab bitcoin-0.16.99-win64.zip
0bf23ac04ca0b4866293306bdd2639d23947ca333a0ffa14625aa33ab718f9a3 src/bitcoin-0.16.99.tar.gz
138d69f87962902a125426c6a3eb38e91f27cdd7e721bc96809adb87b0a64280 bitcoin-win-0.17-res.yml
0efe1c0e036678732f7b8d4c2829587f338663d68b1a5eedac6d3601e3f386d8 bitcoin-0.16.99-osx-unsigned.dmg
86881a72a3795149fb94ebe7bc28caa8979ed33b470b8a36a1cda315de8e7fe8 bitcoin-0.16.99-osx-unsigned.tar.gz
4d7cca92ec8ee4bdbaafffe4c182bbff81070d1a8b575741cb805118035c9301 bitcoin-0.16.99-osx64.tar.gz
4e2a441838213ecae35db1824e05a23e7f026f0b3fbf144460c4735d6ab41c21 src/bitcoin-0.16.99.tar.gz
df18dba7e9c8803ea8d803114a86dcab36f3fe6de27afe56ae4280e58ccb772a bitcoin-osx-0.17-res.yml
Between the two runs, the only resulting binary package with the same sha256sum is the aarch64 tarballs...which do not currently bundle bitcoin-qt in them.