$ git clone -n http://fedora.riscv.rocks:3000/rpms/llvm.git /var/lib/mock/f40-build-798316-141884/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/f40-build-798316-141884/root/chroot_tmpdir/scmroot/llvm'...
$ git fetch origin 56f52ac776e0d77cdcd2130744e2ff31484160a4:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/llvm
 * [new ref]         56f52ac776e0d77cdcd2130744e2ff31484160a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56f52ac Add support for riscv64