Edit node props before changing the tree

Hi,
I am dragging external node (with react-dnd) to the sortable-tree. Before adding this external node, I would like to modify its props, for example adding "parent_id" to that node.
Is there any way to modify currently dragged node on 'just before drop'?
I saw that all information about current node can be accessed in function onMoveNode, but its called after onChange, so it would require map over the whole tree to find and modify node which was just added to the tree.