In https://www.debian.org/doc/manuals/debmake-doc/ch05.en.html#dquilt-ap which is from “Guide for Debian Maintainers” there is this sample:
dquilt new 000-prefix-usr.patch
In https://www.debian.org/doc/manuals/maint-guide/modify.en.html#fixupstream which is from “Debian New Maintainers’ Guide” (older than the one above), there is this sample:
dquilt new fix-gentoo-target.patch
Looking at the first, I supposed the digits at the start of the patch name, have some meaning for the system. But the second example does not use it.
Is it interpreted in any way by quilt or is it a convention some body have for their own purpose and some others don’t?
Side note for people who read this: dquilt is an alias of quilt, it’s not an installed command, as explained in the second link (it's easy to overlook it) and also explained here: What is dquilt and how do I get it?