$ git clone -n https://gitee.com/mgb01105731/maven-scm_1.git /var/lib/mock/dist-an23-build-272305-64168/root/chroot_tmpdir/scmroot/maven-scm_1
Cloning into '/var/lib/mock/dist-an23-build-272305-64168/root/chroot_tmpdir/scmroot/maven-scm_1'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/maven-scm_1
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8279dc init upstream from version 1.7