$ git clone -n https://gitee.com/xinlong-chen/llvm /var/lib/mock/dist-ocs23-riscv-base-build-322939-34424/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-ocs23-riscv-base-build-322939-34424/root/chroot_tmpdir/scmroot/llvm'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/xinlong-chen/llvm
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9cc9103 disable gold for riscv64