$ git clone -n https://gitee.com/src-anolis-os/byacc.git /var/lib/mock/dist-an8.7-build-181811-60052/root/chroot_tmpdir/scmroot/byacc
Cloning into '/var/lib/mock/dist-an8.7-build-181811-60052/root/chroot_tmpdir/scmroot/byacc'...
$ git fetch origin a8:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/byacc
 * [new branch]      a8         -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4791ef7 Add doc sub package