$ git clone -n https://gitee.com/opencloudos-stream/mesa-demos.git /var/lib/mock/dist-ocs23-build-236586-20818/root/chroot_tmpdir/scmroot/mesa-demos
Cloning into '/var/lib/mock/dist-ocs23-build-236586-20818/root/chroot_tmpdir/scmroot/mesa-demos'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/mesa-demos
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3a61b9 Rebuilt for loongarch release