$ git clone -n https://src.fedoraproject.org/rpms/llvm5.0.git /var/lib/mock/f31-build-75840-31345/root/chroot_tmpdir/scmroot/llvm5.0
Cloning into '/var/lib/mock/f31-build-75840-31345/root/chroot_tmpdir/scmroot/llvm5.0'...
$ git reset --hard 11f58574641032d658a339e302d9804be489aa3a
HEAD is now at 11f5857 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild