$ git clone -n https://gitee.com/src-opencloudos-rpms/qt5-qtbase.git /var/lib/mock/dist-oc9-build-56623-14859/root/chroot_tmpdir/scmroot/qt5-qtbase
Cloning into '/var/lib/mock/dist-oc9-build-56623-14859/root/chroot_tmpdir/scmroot/qt5-qtbase'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/qt5-qtbase
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be2698b rebuilt