$ git clone -n https://gitee.com/little-huaduo/llvm.git /var/lib/mock/dist-an23.3-build-434927-73067/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-an23.3-build-434927-73067/root/chroot_tmpdir/scmroot/llvm'...
$ git fetch origin be0925e58580fc41848f9c0ebb0bbe4c73ade25f:KOJI_FETCH_HEAD
From https://gitee.com/little-huaduo/llvm
 * [new ref]         be0925e58580fc41848f9c0ebb0bbe4c73ade25f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be0925e Add Sw64 support for llvm