Commit hooks not running

Ah, I just saw that you show the name of your script. My script is called test and contains the following:

#!/bin/vbash
if [ "$(id -g -n)" != 'vyattacfg' ] ; then
    exec sg vyattacfg -c "/bin/vbash $(readlink -f $0) $@"
fi

echo "pipo"

Could you test by renaming your script?