$ git clone -n https://src.fedoraproject.org/rpms/llvm-libunwind.git /var/lib/mock/f37-build-665863-74275/root/chroot_tmpdir/scmroot/llvm-libunwind
Cloning into '/var/lib/mock/f37-build-665863-74275/root/chroot_tmpdir/scmroot/llvm-libunwind'...
$ git reset --hard c41659c88b03c930b1947c2c04afea99f9d8eb3d
HEAD is now at c41659c Make sure asm files are built with -fcf-protection