f5c832fd44
The submodule leaves a .git *file* (not directory) pointing to ../../.git/modules/lib/geant4, which passes G4GitUtilities' guard but causes a FATAL_ERROR when git status fails in the bare /tmp dir. Remove .git before cmake so the guard fires and the check is skipped. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>