TREES=$(git cat-file --batch-check='%(objectname) %(objecttype)' --batch-all-objects | grep tree | cut -f1 -d" ")

for OUTER_TREE in $TREES; do
    NUMBER_OF_BLOB_CHILDREN=$(git cat-file -p $OUTER_TREE | cut -f2 -d" " | grep blob | wc -l)
    NUMBER_OF_TREE_CHILDREN=$(git cat-file -p $OUTER_TREE | cut -f2 -d" " | grep tree | wc -l)

    if [ $NUMBER_OF_BLOB_CHILDREN -eq 2 -a $NUMBER_OF_TREE_CHILDREN -eq 1 ]; then
        TREE_CHILD=$(git cat-file -p $OUTER_TREE | cut -f1 | grep tree | cut -d" " -f3)
        NUMBER_OF_BLOB_CHILDREN_OF_TREE_CHILD=$(git cat-file -p $TREE_CHILD | cut -f2 -d" " | grep blob | wc -l)
        if [ $NUMBER_OF_BLOB_CHILDREN_OF_TREE_CHILD -eq 2 ]; then
            exit 0
        fi
    fi
done

exit 1