There was an answer. https://lists.debian.org/debian-live/2019/10/msg00003.html
On 04/10/2020, charlie101 <charlie...@journeysend.co.uk> wrote: > I found this question has already been asked here: > https://lists.debian.org/debian-live/2019/10/msg00002.html. > > Unfortunately there was no accompanying answer. > > Can anyone tell me what the deal is with live-build building 'stretch' > images instead of buster, and how one might fix this, assuming there is > an easy fix. Or should I report it as a bug? > > Thanks in advance > > charlie > >