$ git clone -n https://gitee.com/src-anolis-os/mesa-demos.git /var/lib/mock/dist-an23-loongarch-build-309381-66339/root/chroot_tmpdir/scmroot/mesa-demos
Cloning into '/var/lib/mock/dist-an23-loongarch-build-309381-66339/root/chroot_tmpdir/scmroot/mesa-demos'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/mesa-demos
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba8c762 9.0.0