$ git clone -n https://gitee.com/opencloudos-stream/llvm-toolset-21.git /var/lib/mock/dist-oc9-epol-build-231122-81559/root/chroot_tmpdir/scmroot/llvm-toolset-21
Cloning into '/var/lib/mock/dist-oc9-epol-build-231122-81559/root/chroot_tmpdir/scmroot/llvm-toolset-21'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/llvm-toolset-21
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4fdb0c6 !1 add llvm21 toolset Merge pull request !1 from Xinlong-Chen/master