/usr/share/live/build/hooks/ is in live-build 3.0.5-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/live/build/hooks/0010-disable-kexec-tools.chroot
/usr/share/live/build/hooks/0100-remove-adjtime-configuration.chroot
/usr/share/live/build/hooks/0110-remove-backup-files.chroot
/usr/share/live/build/hooks/0120-remove-dbus-machine-id.chroot
/usr/share/live/build/hooks/0130-remove-gnome-icon-cache.chroot
/usr/share/live/build/hooks/0140-remove-log-files.chroot
/usr/share/live/build/hooks/0150-remove-mdadm-configuration.chroot
/usr/share/live/build/hooks/0160-remove-openssh-server-host-keys.chroot
/usr/share/live/build/hooks/0170-remove-python-py.chroot
/usr/share/live/build/hooks/0180-remove-systemd-machine-id.chroot
/usr/share/live/build/hooks/0190-remove-temporary-files.chroot
/usr/share/live/build/hooks/0200-remove-udev-persistent-rules.chroot
/usr/share/live/build/hooks/0300-update-apt-file-cache.chroot
/usr/share/live/build/hooks/0310-update-apt-xapian-index.chroot
/usr/share/live/build/hooks/0320-update-glx-alternative.chroot
/usr/share/live/build/hooks/0330-update-mlocate-database.chroot
/usr/share/live/build/hooks/0340-update-nvidia-alternative.chroot
/usr/share/live/build/hooks/0910-remove-apt-sources-lists.chroot