$ git clone -n http://fedora.riscv.rocks:3000/rpms/llvm.git /var/lib/mock/f41-build-855697-167306/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/f41-build-855697-167306/root/chroot_tmpdir/scmroot/llvm'...
$ git fetch origin 0826728ea427801516ac1f6c2a474ae5076df48c:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/llvm
 * [new ref]         0826728ea427801516ac1f6c2a474ae5076df48c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0826728 Fix files for riscv64