Looks like the patches in https://issues.guix.gnu.org/issue/55419 solved the issue. I can no longer reproduce the issue after a guix pull (commit ebb4302).
Closing this issue. -- s/Fred[re]+i[ck]+/Fredrik/g
- bug#55415: emacs-minimal-28.1-builder: Unknown # objec... Fredrik Salomonsson
- bug#55415: emacs-minimal-28.1-builder: Unknown # ... Maxime Devos
- bug#55415: Closing thread Fredrik Salomonsson
