This bug was fixed in the package sbuild - 0.85.0ubuntu2

---------------
sbuild (0.85.0ubuntu2) lunar; urgency=medium

  * d/t/unshare: Updated test-pkg_1.0_all.deb content for zstd to match
    output from zstd 1.5.4
  * d/t/control: Fix obsolete dependency on lsb-release (should now be
    lsb-release-minimal)
  * d/control: Fix obsolete dependency on lsb-base (should now be
    sysvinit-utils)
  * Bump standards version to 4.6.2

sbuild (0.85.0ubuntu1) lunar; urgency=medium

  [ Dave Jones ]
  * Merge from Debian unstable (LP: #2003201). Remaining changes:
    - Fix autopkgtest `unshare-qemuwrapper` on lunar-proposed
      - d/t/unshare-qemuwrapper: copy apt preferences into the vm's chroot.
      - d/t/unshare: use mmdebstrap --verbose to aid debugging.
  * Removed patches obsoleted/merged by upstream:
    - abs-path-revert.patch: Revert upstream commit that breaks lp-buildd by
      causing symlinks to files not ending in .dsc to no longer be buildable.
    - d/t/build-procenv: Make skippable when mknod fails, as in unprivileged
      container case (as Ubuntu's autopkgtest uses in the armhf case)
    - debian/tests/unshare: Run the test, but skip it if user namespaces are
      not supported
    - unshare test requires isolation-machine to execute

  [ Benjamin Drung ]
  * d/t/get_default_release.py: Rely on VERSION_CODENAME from /etc/os-release
    on non-Debian systems if the variable is set.
  * d/t/check-unshare-support: Add a check for unshare support. If unshare is
    supported, run the unshare autopkgtest directly. Otherwise run
    unshare-qemuwrapper.

sbuild (0.85.0) unstable; urgency=medium

  [ Johannes Schauer Marin Rodrigues ]
  * lib/Sbuild/Conf.pm: replace deprecated
    Dpkg::Build::Info::get_build_env_allowed by
    Dpkg::BuildInfo::get_build_env_allowed (Closes: #1027719)
  * debian/control: bump libdpkg-perl dep to 1.21.14 because of
    Dpkg::BuildInfo::get_build_env_allowed
  * lib/Sbuild/ResolverBase.pm: copying debs can take a long time -- output log
    messages
  * the sbuild dummy repository should not be considered to create a deb-src
    entry automatically
  * lib/Sbuild/ChrootUnshare.pm: guard against empty /etc/subuid and
    /etc/subgid
  * debian/tests/unshare: uncompress source package before comparing to ignore
    differences in the compression (dpkg recently started using threaded xz
    compression for source packages)
  * add get_default_release.py to figure out the archive used by the currently
    running system
  * debian/tests/unshare: put common sbuild invocation into a function
  * debian/tests/unshare: do not run apt upgrade nor apt update
  * debian/tests/control: add dependency on python3-apt
  * debian/tests/unshare-qemuwrapper: do not cleanup apt list files or
    otherwise we have to call apt update again later
  * lib/Sbuild/Build.pm: reduce number of self->get_conf() calls
  * debian/control: add debootstrap as dependency of
    sbuild-debian-developer-setup
  * bin/sbuild-createchroot: set MERGED_USR to 'auto' letting debootstrap
    decide
  * bin/sbuild-debian-developer-setup: inform the user where the chroot is and
    that the current user has already been added to the sbuild group

  [ Jochen Sprickerhof ]
  * Make the DSC Dir configurable

  [ Dave Jones ]
  * Skip build-procenv when mknod would fail (Closes: #928364)

  [ Benjamin Drung ]
  * Fix building symlinks not ending on .dsc (Closes: #1012856)

sbuild (0.84.2) unstable; urgency=medium

  [ Stefano Rivera ]
  * fix autopkgtest LXD mode and sbuild-qemu (closes: #1024619)

 -- Dave Jones <email address hidden>  Wed, 29 Mar 2023 15:18:02 +0100