$ git clone -n https://gitee.com/xiaolunfhb/bash.git /var/lib/mock/dist-an23-build-279598-64534/root/chroot_tmpdir/scmroot/bash
Cloning into '/var/lib/mock/dist-an23-build-279598-64534/root/chroot_tmpdir/scmroot/bash'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/xiaolunfhb/bash
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b46076 5.2.15