There is an updated pull request by Nairou against master on the void-packages repository

https://github.com/Nairou/void-packages patch-1
https://github.com/void-linux/void-packages/pull/20961

herbstluftwm: update to 0.8.0


A patch file from https://github.com/void-linux/void-packages/pull/20961.patch is attached