mpbuild image(s) contain a (too) old git version

When I try to use mpbuild ``` mpbuild build unix debug .... make: Entering directory '/home/jos/mp_debugpy/micropython/ports/unix' Use make V=1 or set BUILD_VERBOSE in your environment to increase build verbosity. Updating submodules: lib/mbedtls lib/berkeley-db-1.xx lib/micropython-lib fatal: not a git repository: /home/jos/mp_debugpy/micropython/../.git/modules/micropython make: *** [../../py/mkrules.mk:269: submodules] Error 128 make: Leaving directory '/home/jos/mp_debugpy/micropython/ports/unix' ``` I get the same error when I use an old WSL instance with an old git, so I guess that is the some issue : ``` docker run --rm -it gcc:12-bookworm bash root@17f996b098a5:/# git --version git version 2.39.5 ```