There is a new pull request by ericonr against master on the void-packages repository

https://github.com/ericonr/void-packages sbcl
https://github.com/void-linux/void-packages/pull/25194

sbcl: build with ecl on musl.
The patches were taken from Alpine Linux.

A patch file from https://github.com/void-linux/void-packages/pull/25194.patch is attached