mingw64-clang13 from home:mnhauke:mingw:win64:sdr project
Select Your Operating System
Add repository and install manually
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke:mingw:win64:sdr/15.6/home:mnhauke:mingw:win64:sdr.repo zypper refresh zypper install mingw64-clang13