$ git clone -n https://gitee.com/src-anolis-epao/usdm.git /var/lib/mock/dist-an23-epao-build-294747-65755/root/chroot_tmpdir/scmroot/usdm
Cloning into '/var/lib/mock/dist-an23-epao-build-294747-65755/root/chroot_tmpdir/scmroot/usdm'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-epao/usdm
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ecaddf3 optimise spec