$ git clone -n https://gitee.com/src-opencloudos-rpms/qt5-qtserialbus.git /var/lib/mock/dist-oc9-build-49428-14595/root/chroot_tmpdir/scmroot/qt5-qtserialbus
Cloning into '/var/lib/mock/dist-oc9-build-49428-14595/root/chroot_tmpdir/scmroot/qt5-qtserialbus'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/qt5-qtserialbus
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db0c4b8 import qt5-qtserialbus-5.15.7-3.tl4