Diff of the two buildlogs:

--
--- b1/build.log	2023-04-13 19:10:37.348454198 +0000
+++ b2/build.log	2023-04-13 19:11:19.270592239 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Apr 13 07:09:41 -12 2023
-I: pbuilder-time-stamp: 1681412981
+I: Current time: Thu May 16 15:33:40 +14 2024
+I: pbuilder-time-stamp: 1715823220
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/bookworm-reproducible-base.tgz]
 I: copying local configuration
@@ -16,7 +16,7 @@
 I: copying [./libgit-wrapper-perl_0.048.orig.tar.gz]
 I: copying [./libgit-wrapper-perl_0.048-2.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Sat Dec 10 12:29:48 2022 -12
+gpgv: Signature made Sun Dec 11 14:29:48 2022 +14
 gpgv:                using RSA key B23862C415D6565A4E86CBD7579C160D4C9E23E8
 gpgv: Can't check signature: No public key
 dpkg-source: warning: cannot verify inline signature for ./libgit-wrapper-perl_0.048-2.dsc: no acceptable signature found
@@ -27,11 +27,20 @@
 dpkg-source: info: applying 0001-Fix-test-9-in-basic.t-with-Git-2.9.patch
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3472/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/22625/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink15-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
+lrwxrwxrwx 1 root root 4 Jan  6  2023 /bin/sh -> dash
+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/22625/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/22625/tmp/hooks/D02_print_environment starting
 I: set
   BUILDDIR='/build'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
+  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=8'
@@ -41,38 +50,38 @@
   IFS=' 	
   '
   LANG='C'
-  LANGUAGE='en_US:en'
+  LANGUAGE='nl_BE:nl'
   LC_ALL='C'
   MAIL='/var/mail/root'
   OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
+  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'
-  PPID='3472'
+  PPID='22625'
   PS1='# '
   PS2='> '
   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.iFkpNs5N/pbuilderrc_BBaw --distribution bookworm --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.iFkpNs5N/b1 --logfile b1/build.log libgit-wrapper-perl_0.048-2.dsc'
+  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.iFkpNs5N/pbuilderrc_Rn9s --distribution bookworm --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.iFkpNs5N/b2 --logfile b2/build.log --extrapackages usrmerge libgit-wrapper-perl_0.048-2.dsc'
   SUDO_GID='117'
   SUDO_UID='110'
   SUDO_USER='jenkins'
   TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
+  TZ='/usr/share/zoneinfo/Etc/GMT-14'
   USER='root'
   USERNAME='root'
   _='/usr/bin/systemd-run'
   http_proxy='http://192.168.101.16:3128'
 I: uname -a
-  Linux codethink14-arm64 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
+  Linux i-capture-the-hostname 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr 12 22:50 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3472/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 16 07:12 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/22625/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -172,7 +181,7 @@
 Get: 48 http://deb.debian.org/debian bookworm/main arm64 libsub-uplevel-perl all 0.2800-3 [14.0 kB]
 Get: 49 http://deb.debian.org/debian bookworm/main arm64 libtest-deep-perl all 1.204-1 [52.9 kB]
 Get: 50 http://deb.debian.org/debian bookworm/main arm64 libtest-exception-perl all 0.43-3 [16.9 kB]
-Fetched 28.9 MB in 2s (14.2 MB/s)
+Fetched 28.9 MB in 1s (44.0 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package sensible-utils.
 (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 ... 19616 files and directories currently installed.)
@@ -389,10 +398,15 @@
 Reading package lists...
 Building dependency tree...
 Reading state information...
+usrmerge is already the newest version (35).
 fakeroot is already the newest version (1.31-1.2).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/libgit-wrapper-perl-0.048/ && 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  > ../libgit-wrapper-perl_0.048-2_source.changes
+I: user script /srv/workspace/pbuilder/22625/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/22625/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/libgit-wrapper-perl-0.048/ && 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  > ../libgit-wrapper-perl_0.048-2_source.changes
 dpkg-buildpackage: info: source package libgit-wrapper-perl
 dpkg-buildpackage: info: source version 0.048-2
 dpkg-buildpackage: info: source distribution unstable
@@ -417,12 +431,12 @@
    dh_auto_build
 	make -j8
 make[1]: Entering directory '/build/libgit-wrapper-perl-0.048'
-cp lib/Git/Wrapper/File/RawModification.pm blib/lib/Git/Wrapper/File/RawModification.pm
 cp lib/Git/Wrapper/Statuses.pm blib/lib/Git/Wrapper/Statuses.pm
+cp lib/Git/Wrapper/Exception.pm blib/lib/Git/Wrapper/Exception.pm
+cp lib/Git/Wrapper.pm blib/lib/Git/Wrapper.pm
 cp lib/Git/Wrapper/Log.pm blib/lib/Git/Wrapper/Log.pm
 cp lib/Git/Wrapper/Status.pm blib/lib/Git/Wrapper/Status.pm
-cp lib/Git/Wrapper.pm blib/lib/Git/Wrapper.pm
-cp lib/Git/Wrapper/Exception.pm blib/lib/Git/Wrapper/Exception.pm
+cp lib/Git/Wrapper/File/RawModification.pm blib/lib/Git/Wrapper/File/RawModification.pm
 Manifying 6 pod documents
 make[1]: Leaving directory '/build/libgit-wrapper-perl-0.048'
    debian/rules override_dh_auto_test
@@ -530,7 +544,7 @@
 1..3
 ok
 All tests successful.
-Files=8, Tests=75,  3 wallclock secs ( 0.12 usr  0.02 sys +  1.93 cusr  0.75 csys =  2.82 CPU)
+Files=8, Tests=75,  2 wallclock secs ( 0.09 usr  0.02 sys +  1.51 cusr  0.61 csys =  2.23 CPU)
 Result: PASS
 make[2]: Leaving directory '/build/libgit-wrapper-perl-0.048'
 make[1]: Leaving directory '/build/libgit-wrapper-perl-0.048'
@@ -544,9 +558,9 @@
 make[1]: Entering directory '/build/libgit-wrapper-perl-0.048'
 Manifying 6 pod documents
 Installing /build/libgit-wrapper-perl-0.048/debian/libgit-wrapper-perl/usr/share/perl5/Git/Wrapper.pm
-Installing /build/libgit-wrapper-perl-0.048/debian/libgit-wrapper-perl/usr/share/perl5/Git/Wrapper/Exception.pm
 Installing /build/libgit-wrapper-perl-0.048/debian/libgit-wrapper-perl/usr/share/perl5/Git/Wrapper/Status.pm
 Installing /build/libgit-wrapper-perl-0.048/debian/libgit-wrapper-perl/usr/share/perl5/Git/Wrapper/Log.pm
+Installing /build/libgit-wrapper-perl-0.048/debian/libgit-wrapper-perl/usr/share/perl5/Git/Wrapper/Exception.pm
 Installing /build/libgit-wrapper-perl-0.048/debian/libgit-wrapper-perl/usr/share/perl5/Git/Wrapper/Statuses.pm
 Installing /build/libgit-wrapper-perl-0.048/debian/libgit-wrapper-perl/usr/share/perl5/Git/Wrapper/File/RawModification.pm
 Installing /build/libgit-wrapper-perl-0.048/debian/libgit-wrapper-perl/usr/share/man/man3/Git::Wrapper::Statuses.3pm
@@ -577,12 +591,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: not including original source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/22625/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/22625/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/3472 and its subdirectories
-I: Current time: Thu Apr 13 07:10:36 -12 2023
-I: pbuilder-time-stamp: 1681413036
+I: removing directory /srv/workspace/pbuilder/22625 and its subdirectories
+I: Current time: Thu May 16 15:34:18 +14 2024
+I: pbuilder-time-stamp: 1715823258