i was looking at some of the sources files i noticed that some have different formats where should i look for details about required format for repo files https://ftp.debian.org/debian/dists/bookworm/main/source/Sources.xz https://ftp.debian.org/debian/dists/bookworm-updates/main/source/Sources.xz apologies if this is the wrong list i wood appreciate it if you would point me in the right direction