fatal error: version number

[anon8675309]

When I attempt to compile this using Ubuntu 18.04 (chosen because it is the same distro and version as the CI system uses), I get the following error:

    default: + dch -v 20230402-182945 --package raspberrypi-firmware 'add Hypriot custom kernel'
    default: dch: fatal error at line 1092:
    default: New version specified (20230402-182945) is less than
    default: the current version number (1:1.20230306-1)!  Use -b to force.

Adding the -b flag to dch resolves this error.