The commit shall not be updated during a CI run, and this calls git fetch, which is considerably slow at times. This reduces the git fetch calls down to 1 from 3 in the generate-build-jobs step. Signed-off-by: Pablo Correa Gómez <pabloyoyoista@postmarketos.org> Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/7649>