Diff of the two buildlogs:

--
--- b1/build.log	2025-09-04 13:09:29.169866994 +0000
+++ b2/build.log	2025-09-04 13:10:30.785943584 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Oct  7 07:30:50 -12 2026
-I: pbuilder-time-stamp: 1791401450
+I: Current time: Fri Sep  5 03:09:31 +14 2025
+I: pbuilder-time-stamp: 1756991371
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/forky-reproducible-base.tgz]
 I: copying local configuration
@@ -24,53 +24,85 @@
 dpkg-source: info: applying example_config
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/2335956/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/84301/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink04-arm64.
+I: Changing host+domainname to test build reproducibility
+I: Adding a custom variable just for the fun of it...
+I: Changing /bin/sh to bash
+'/bin/sh' -> '/bin/bash'
+lrwxrwxrwx 1 root root 9 Sep  4 13:09 /bin/sh -> /bin/bash
+I: Setting pbuilder2's login shell to /bin/bash
+I: Setting pbuilder2's GECOS to second user,second room,second work-phone,second home-phone,second other
+I: user script /srv/workspace/pbuilder/84301/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/84301/tmp/hooks/D02_print_environment starting
 I: set
-  BUILDDIR='/build/reproducible-path'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
-  BUILD_ARCH='arm64'
-  DEBIAN_FRONTEND='noninteractive'
+  BASH=/bin/sh
+  BASHOPTS=checkwinsize:cmdhist:complete_fullquote:extquote:force_fignore:globasciiranges:globskipdots:hostcomplete:interactive_comments:patsub_replacement:progcomp:promptvars:sourcepath
+  BASH_ALIASES=()
+  BASH_ARGC=()
+  BASH_ARGV=()
+  BASH_CMDS=()
+  BASH_LINENO=([0]="12" [1]="0")
+  BASH_LOADABLES_PATH=/usr/local/lib/bash:/usr/lib/bash:/opt/local/lib/bash:/usr/pkg/lib/bash:/opt/pkg/lib/bash:.
+  BASH_SOURCE=([0]="/tmp/hooks/D02_print_environment" [1]="/tmp/hooks/D02_print_environment")
+  BASH_VERSINFO=([0]="5" [1]="2" [2]="37" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.37(1)-release'
+  BUILDDIR=/build/reproducible-path
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME=pbuilder2
+  BUILD_ARCH=arm64
+  DEBIAN_FRONTEND=noninteractive
   DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=12 '
-  DISTRIBUTION='forky'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=forky
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='313b208e4a3d42dca8ed2d19390eb18e'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  MAIL='/var/mail/root'
-  OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
-  PBCURRENTCOMMANDLINEOPERATION='build'
-  PBUILDER_OPERATION='build'
-  PBUILDER_PKGDATADIR='/usr/share/pbuilder'
-  PBUILDER_PKGLIBDIR='/usr/lib/pbuilder'
-  PBUILDER_SYSCONFDIR='/etc'
-  PPID='2335956'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=97f516946b174344a7242986f25bed4a
+  LANG=C
+  LANGUAGE=nl_BE:nl
+  LC_ALL=C
+  MACHTYPE=aarch64-unknown-linux-gnu
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnu
+  PATH=/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path
+  PBCURRENTCOMMANDLINEOPERATION=build
+  PBUILDER_OPERATION=build
+  PBUILDER_PKGDATADIR=/usr/share/pbuilder
+  PBUILDER_PKGLIBDIR=/usr/lib/pbuilder
+  PBUILDER_SYSCONFDIR=/etc
+  PIPESTATUS=([0]="0")
+  POSIXLY_CORRECT=y
+  PPID=84301
   PS4='+ '
-  PWD='/'
-  SHELL='/bin/bash'
-  SHLVL='2'
-  SUDO_COMMAND='/usr/bin/timeout -k 18.1h 18h /usr/bin/ionice -c 3 /usr/bin/nice /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.CSe7UpTr/pbuilderrc_xmUB --distribution forky --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.CSe7UpTr/b1 --logfile b1/build.log hitch_1.8.0-1.dsc'
-  SUDO_GID='109'
-  SUDO_HOME='/var/lib/jenkins'
-  SUDO_UID='104'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.4:3128'
+  PWD=/
+  SHELL=/bin/bash
+  SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:posix
+  SHLVL=3
+  SUDO_COMMAND='/usr/bin/timeout -k 24.1h 24h /usr/bin/ionice -c 3 /usr/bin/nice -n 11 /usr/bin/unshare --uts -- /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.CSe7UpTr/pbuilderrc_zDdA --distribution forky --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.CSe7UpTr/b2 --logfile b2/build.log hitch_1.8.0-1.dsc'
+  SUDO_GID=109
+  SUDO_HOME=/var/lib/jenkins
+  SUDO_UID=104
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://192.168.101.4:3128
 I: uname -a
-  Linux codethink03-arm64 6.12.41+deb13-cloud-arm64 #1 SMP Debian 6.12.41-1 (2025-08-12) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.41+deb13-cloud-arm64 #1 SMP Debian 6.12.41-1 (2025-08-12) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug 10  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/2335956/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug 10 12:30 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/84301/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -180,7 +212,7 @@
 Get: 54 http://deb.debian.org/debian forky/main arm64 pkgconf arm64 1.8.1-4 [26.1 kB]
 Get: 55 http://deb.debian.org/debian forky/main arm64 python3-roman all 5.1-1 [11.0 kB]
 Get: 56 http://deb.debian.org/debian forky/main arm64 python3-docutils all 0.21.2+dfsg-2 [403 kB]
-Fetched 23.0 MB in 0s (68.0 MB/s)
+Fetched 23.0 MB in 0s (163 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package m4.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 20011 files and directories currently installed.)
@@ -377,8 +409,8 @@
 Setting up tzdata (2025b-5) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Wed Oct  7 19:31:21 UTC 2026.
-Universal Time is now:  Wed Oct  7 19:31:21 UTC 2026.
+Local time is now:      Thu Sep  4 13:09:53 UTC 2025.
+Universal Time is now:  Thu Sep  4 13:09:53 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20240727.1) ...
@@ -434,7 +466,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/hitch-1.8.0/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-genchanges -S  > ../hitch_1.8.0-1_source.changes
+I: user script /srv/workspace/pbuilder/84301/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for forky
+I: user script /srv/workspace/pbuilder/84301/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/hitch-1.8.0/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-genchanges -S  > ../hitch_1.8.0-1_source.changes
 dpkg-buildpackage: info: source package hitch
 dpkg-buildpackage: info: source version 1.8.0-1
 dpkg-buildpackage: info: source distribution unstable
@@ -610,8 +646,8 @@
 make[3]: Leaving directory '/build/reproducible-path/hitch-1.8.0/src/util'
 Making all in src
 make[3]: Entering directory '/build/reproducible-path/hitch-1.8.0/src'
-test -f cfg_lex.c || /bin/bash ../build-aux/ylwrap cfg_lex.l lex.yy.c cfg_lex.c -- flex  
-test -f cfg_parser.c || /bin/bash ../build-aux/ylwrap cfg_parser.y y.tab.c cfg_parser.c y.tab.h `echo cfg_parser.c | sed -e s/cc$/hh/ -e s/cpp$/hpp/ -e s/cxx$/hxx/ -e s/c++$/h++/ -e s/c$/h/` y.output cfg_parser.output -- bison -y -d -t 
+test -f cfg_lex.c || /bin/sh ../build-aux/ylwrap cfg_lex.l lex.yy.c cfg_lex.c -- flex  
+test -f cfg_parser.c || /bin/sh ../build-aux/ylwrap cfg_parser.y y.tab.c cfg_parser.c y.tab.h `echo cfg_parser.c | sed -e s/cc$/hh/ -e s/cpp$/hpp/ -e s/cxx$/hxx/ -e s/c++$/h++/ -e s/c$/h/` y.output cfg_parser.output -- bison -y -d -t 
 updating cfg_parser.h
 make  all-am
 make[4]: Entering directory '/build/reproducible-path/hitch-1.8.0/src'
@@ -675,8 +711,8 @@
 make  install-am
 make[4]: Entering directory '/build/reproducible-path/hitch-1.8.0/src'
 make[5]: Entering directory '/build/reproducible-path/hitch-1.8.0/src'
- /usr/bin/mkdir -p '/build/reproducible-path/hitch-1.8.0/debian/hitch/usr/sbin'
 make[5]: Nothing to be done for 'install-data-am'.
+ /usr/bin/mkdir -p '/build/reproducible-path/hitch-1.8.0/debian/hitch/usr/sbin'
   /usr/bin/install -c hitch '/build/reproducible-path/hitch-1.8.0/debian/hitch/usr/sbin'
 make[5]: Leaving directory '/build/reproducible-path/hitch-1.8.0/src'
 make[4]: Leaving directory '/build/reproducible-path/hitch-1.8.0/src'
@@ -688,8 +724,8 @@
  /usr/bin/mkdir -p '/build/reproducible-path/hitch-1.8.0/debian/hitch/usr/share/man/man8'
  /usr/bin/mkdir -p '/build/reproducible-path/hitch-1.8.0/debian/hitch/usr/share/man/man5'
  /usr/bin/install -c -m 644 hitch.conf.example CHANGES.rst README.md '/build/reproducible-path/hitch-1.8.0/debian/hitch/usr/share/doc/hitch'
- /usr/bin/install -c -m 644 hitch.8 '/build/reproducible-path/hitch-1.8.0/debian/hitch/usr/share/man/man8'
  /usr/bin/install -c -m 644 hitch.conf.5 '/build/reproducible-path/hitch-1.8.0/debian/hitch/usr/share/man/man5'
+ /usr/bin/install -c -m 644 hitch.8 '/build/reproducible-path/hitch-1.8.0/debian/hitch/usr/share/man/man8'
 make[4]: Leaving directory '/build/reproducible-path/hitch-1.8.0'
 make[3]: Leaving directory '/build/reproducible-path/hitch-1.8.0'
 make[2]: Leaving directory '/build/reproducible-path/hitch-1.8.0'
@@ -727,10 +763,10 @@
    dh_installman
 	man-recode --to-code UTF-8 --suffix .dh-new debian/hitch/usr/share/man/man5/hitch.conf.5
 	man-recode --to-code UTF-8 --suffix .dh-new debian/hitch/usr/share/man/man8/hitch.8
-	mv debian/hitch/usr/share/man/man8/hitch.8.dh-new debian/hitch/usr/share/man/man8/hitch.8
-	chmod 0644 -- debian/hitch/usr/share/man/man8/hitch.8
 	mv debian/hitch/usr/share/man/man5/hitch.conf.5.dh-new debian/hitch/usr/share/man/man5/hitch.conf.5
 	chmod 0644 -- debian/hitch/usr/share/man/man5/hitch.conf.5
+	mv debian/hitch/usr/share/man/man8/hitch.8.dh-new debian/hitch/usr/share/man/man8/hitch.8
+	chmod 0644 -- debian/hitch/usr/share/man/man8/hitch.8
    dh_installinit
    dh_installtmpfiles
 	install -m0755 -d debian/hitch/usr/lib/tmpfiles.d
@@ -820,10 +856,10 @@
 	cd debian/.debhelper/hitch/dbgsym-root >/dev/null && xargs -r0 md5sum | perl -pe 'if (s@^\\@@) { s/\\\\/\\/g; }' > DEBIAN/md5sums
 	chmod 0644 -- debian/.debhelper/hitch/dbgsym-root/DEBIAN/md5sums
    dh_builddeb
-	dpkg-deb --root-owner-group --build debian/.debhelper/hitch/dbgsym-root ..
 	dpkg-deb --root-owner-group --build debian/hitch ..
-dpkg-deb: building package 'hitch' in '../hitch_1.8.0-1_arm64.deb'.
+	dpkg-deb --root-owner-group --build debian/.debhelper/hitch/dbgsym-root ..
 dpkg-deb: building package 'hitch-dbgsym' in '../hitch-dbgsym_1.8.0-1_arm64.deb'.
+dpkg-deb: building package 'hitch' in '../hitch_1.8.0-1_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../hitch_1.8.0-1_arm64.buildinfo
  dpkg-genchanges --build=binary -O../hitch_1.8.0-1_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -831,12 +867,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: including full source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/84301/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/84301/tmp/hooks/B01_cleanup finished
 I: unmounting dev/ptmx filesystem
 I: unmounting dev/pts filesystem
 I: unmounting dev/shm filesystem
 I: unmounting proc filesystem
 I: unmounting sys filesystem
 I: cleaning the build env 
-I: removing directory /srv/workspace/pbuilder/2335956 and its subdirectories
-I: Current time: Wed Oct  7 07:32:28 -12 2026
-I: pbuilder-time-stamp: 1791401548
+I: removing directory /srv/workspace/pbuilder/84301 and its subdirectories
+I: Current time: Fri Sep  5 03:10:29 +14 2025
+I: pbuilder-time-stamp: 1756991429