$ git clone -n https://gitee.com/src-opencloudos-rpms/qt5-qtmultimedia.git /var/lib/mock/dist-oc9-build-58383-16463/root/chroot_tmpdir/scmroot/qt5-qtmultimedia
Cloning into '/var/lib/mock/dist-oc9-build-58383-16463/root/chroot_tmpdir/scmroot/qt5-qtmultimedia'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/qt5-qtmultimedia
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da6a38c import qt5-qtmultimedia-5.15.10-1.tl4