$ git clone -n https://gitee.com/src-opencloudos-rpms/llvm.git /var/lib/mock/dist-oc9-build-242475-82984/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-oc9-build-242475-82984/root/chroot_tmpdir/scmroot/llvm'...
$ git fetch origin 1b137b3f8b302355cc1dee0626a9b4903c003f71:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/llvm
 * [new ref]         1b137b3f8b302355cc1dee0626a9b4903c003f71 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b137b3 import llvm-17.0.6-18.tl4