Fetching raspberrypi-firmware git requires lots of gigabytes

[jdapena]

Description

do_fetch stage of rpi-bootfiles takes ages because of the huge size of the repository, even when using BB_GIT_SHALLOW. Here, at 37% of the fetch, it already had to download more than 14 GB.

Steps to reproduce the issue:

1. Using https://github.com/Igalia/meta-chromium and building with KAS_MACHINE=raspberrypi4-64 kas build kas:chromium.yml:kas:commercial.yml

Describe the results you received:

Fetching fails and/or takes ages while downloading raspberrypi-firmware repository.

Describe the results you expected:

Fetching should be faster, and not fetch the whole repository. Ideally by fetching tagged tarballs as needed. An intermediate solution could be fetching the generated zip from github. I.e. https://github.com/raspberrypi/firmware/archive/5689dd184872b809af91d6636a832b1484d90fef.zip (but that tarball is AFAIK generated at navigation. Tagged versions are usually pregenerated.

Additional information you deem important (e.g. issue happens only occasionally):

Additional details (revisions used, host distro, etc.):

Host: Ubuntu.
Local bandwitdh: around 10-15 MB per second fetching from github.

[kraj]

#1298 should fix it

[jdapena]

#1298 should fix it

Yes, it looks like that should fix it. I will close this one when landed.

[agherzan]

The fix should be merged. Thanks, @kraj!