musl has 4 for 2019.

musl-1.1.24.tar.gz (sig) - October 13, 2019

musl-1.1.23.tar.gz (sig) - July 16, 2019

musl-1.1.22.tar.gz (sig) - April 9, 2019

musl-1.1.21.tar.gz (sig) - January 21, 2019

http://www.musl-libc.org/oldversions.html