Appending characters to the node URL

I want an action that appends characters to a node url after updating the node under certain conditions.
I have accomplished this with a redirect, appending a hash:
redirect to: [node:url]#anytext
which works, but I think a redirect is not the most efficient or fastest way to accomplish this.

If anyone has a hint to do this in a better way, please let me know.
Thank you very much