$ git clone -n https://gitee.com/mgb01105731/python-flit-scm.git /var/lib/mock/dist-an23-build-329855-69396/root/chroot_tmpdir/scmroot/python-flit-scm
Cloning into '/var/lib/mock/dist-an23-build-329855-69396/root/chroot_tmpdir/scmroot/python-flit-scm'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/python-flit-scm
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13619a5 rebuild