0c36f7 git_pull_and_update.sh: replace -C with --exclude '.git'

Authored and Committed by Christian Boltz 5 years ago
    git_pull_and_update.sh: replace -C with --exclude '.git'
    
    -C excludes files CVS would exclude, for example *.o files. Sadly this
    also excludes directories like "build.o.o".
    
    --exclude .git is more specific and avoids this problem.