$ git clone -n https://gitee.com/mgb01105731/maven.git /var/lib/mock/dist-an23.2-build-422251-72903/root/chroot_tmpdir/scmroot/maven
Cloning into '/var/lib/mock/dist-an23.2-build-422251-72903/root/chroot_tmpdir/scmroot/maven'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/maven
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6b0ca2 Update to 3.9.9 from 3.8.5