$ git clone -n https://gitee.com/bbrucezhang/qt.git /var/lib/mock/dist-oc9-epol-build-186066-80270/root/chroot_tmpdir/scmroot/qt
Cloning into '/var/lib/mock/dist-oc9-epol-build-186066-80270/root/chroot_tmpdir/scmroot/qt'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/bbrucezhang/qt
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f798b5c fix