$ git clone -n https://gitee.com/mgb01105731/enca.git /var/lib/mock/dist-an23-dde-build-378558-71802/root/chroot_tmpdir/scmroot/enca
Cloning into '/var/lib/mock/dist-an23-dde-build-378558-71802/root/chroot_tmpdir/scmroot/enca'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/enca
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c52fb05 init upstream from version 1.19