$ git clone -n https://gitee.com/hongwei-qin/llvm-toolset.git /var/lib/mock/dist-an8.10-build-468774-74003/root/chroot_tmpdir/scmroot/llvm-toolset
Cloning into '/var/lib/mock/dist-an8.10-build-468774-74003/root/chroot_tmpdir/scmroot/llvm-toolset'...
$ git fetch origin 52917d4cfbb45de4c4198144cc035e655528f2b6:KOJI_FETCH_HEAD
From https://gitee.com/hongwei-qin/llvm-toolset
 * [new ref]         52917d4cfbb45de4c4198144cc035e655528f2b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52917d4 update 8.10.0