Bionic verified using 1.0.95ubuntu0.12 from bionic-proposed:

root@bionic:~# apt-cache policy debootstrap
debootstrap:
  Installed: 1.0.95ubuntu0.12
  Candidate: 1.0.95ubuntu0.12
  Version table:
 *** 1.0.95ubuntu0.12 500
        500 http://archive.ubuntu.com/ubuntu bionic-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1.0.95ubuntu0.11 500
        500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
     1.0.95 500
        500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
root@bionic:~# ls -alh /usr/share/debootstrap/
functions  scripts/   
root@bionic:~# ls -alh /usr/share/debootstrap/scripts/lunar 
lrwxrwxrwx 1 root root 5 Nov  4 06:55 /usr/share/debootstrap/scripts/lunar -> gutsy
root@bionic:~# mkdir lunar
root@bionic:~# debootstrap lunar lunar/
[...]
root@bionic:~# chroot lunar/
# cat /etc/os-release
PRETTY_NAME="Ubuntu Lunar Lobster (development branch)"
NAME="Ubuntu"
VERSION_ID="23.04"
VERSION="23.04 (Lunar Lobster)"
VERSION_CODENAME=lunar
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=lunar
LOGO=ubuntu-logo
---
Focal verified using 1.0.118ubuntu1.8 from focal-proposed:

root@focal:~# apt-cache policy debootstrap
debootstrap:
  Installed: 1.0.118ubuntu1.8
  Candidate: 1.0.118ubuntu1.8
  Version table:
 *** 1.0.118ubuntu1.8 500
        500 http://archive.ubuntu.com/ubuntu focal-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1.0.118ubuntu1.7 500
        500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
     1.0.118ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
root@focal:~# ls -alh /usr/share/debootstrap/scripts/lunar
lrwxrwxrwx 1 root root 5 Nov  3 14:30 /usr/share/debootstrap/scripts/lunar -> gutsy
root@focal:~# mkdir lunar 
root@focal:~# debootstrap lunar lunar/
[...]
root@focal:~# chroot lunar 
# cat /etc/os-release
PRETTY_NAME="Ubuntu Lunar Lobster (development branch)"
NAME="Ubuntu"
VERSION_ID="23.04"
VERSION="23.04 (Lunar Lobster)"
VERSION_CODENAME=lunar
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=lunar
LOGO=ubuntu-logo
---
Jammy verified using 1.0.126+nmu1ubuntu0.2 from jammy-proposed:

root@jammy:~# apt-cache policy debootstrap
debootstrap:
  Installed: 1.0.126+nmu1ubuntu0.2
  Candidate: 1.0.126+nmu1ubuntu0.2
  Version table:
 *** 1.0.126+nmu1ubuntu0.2 500
        500 http://archive.ubuntu.com/ubuntu jammy-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1.0.126+nmu1ubuntu0.1 500
        500 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages
     1.0.126+nmu1 500
        500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages
root@jammy:~# ls -alh /usr/share/debootstrap/scripts/lunar 
lrwxrwxrwx 1 root root 5 Nov  3 14:28 /usr/share/debootstrap/scripts/lunar -> gutsy
root@jammy:~# mkdir lunar 
root@jammy:~# debootstrap lunar lunar/
[...]
root@jammy:~# chroot lunar 
# cat /etc/os-release 
PRETTY_NAME="Ubuntu Lunar Lobster (development branch)"
NAME="Ubuntu"
VERSION_ID="23.04"
VERSION="23.04 (Lunar Lobster)"
VERSION_CODENAME=lunar
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=lunar
LOGO=ubuntu-logo
---
Kinetic verified using 1.0.127ubuntu1.1 from kinetic-proposed:

root@kinetic:~# apt-cache policy debootstrap
debootstrap:
  Installed: 1.0.127ubuntu1.1
  Candidate: 1.0.127ubuntu1.1
  Version table:
 *** 1.0.127ubuntu1.1 500
        500 http://archive.ubuntu.com/ubuntu kinetic-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1.0.127ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu kinetic/main amd64 Packages
root@kinetic:~# ls -alh /usr/share/debootstrap/scripts/lunar 
lrwxrwxrwx 1 root root 5 Nov  3 14:05 /usr/share/debootstrap/scripts/lunar -> gutsy
root@kinetic:~# mkdir lunar 
root@kinetic:~# debootstrap lunar lunar/
[...]
root@kinetic:~# chroot lunar/
# cat /etc/os-release 
PRETTY_NAME="Ubuntu Lunar Lobster (development branch)"
NAME="Ubuntu"
VERSION_ID="23.04"
VERSION="23.04 (Lunar Lobster)"
VERSION_CODENAME=lunar
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=lunar
LOGO=ubuntu-logo