$ git clone -n https://gitee.com/src-opencloudos-rpms/llvm.git /var/lib/mock/dist-oc9-build-74980-51891/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-oc9-build-74980-51891/root/chroot_tmpdir/scmroot/llvm'...
$ git fetch origin bffb38089cf2b7fe012079f466edecdbc3667ec8:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/llvm
 * [new ref]         bffb38089cf2b7fe012079f466edecdbc3667ec8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bffb380 import llvm-17.0.6-4.tl4