$ git clone -n https://gitee.com/opencloudos-stream/ghc-req.git /var/lib/mock/dist-oc9-epol-build-228372-81207/root/chroot_tmpdir/scmroot/ghc-req
Cloning into '/var/lib/mock/dist-oc9-epol-build-228372-81207/root/chroot_tmpdir/scmroot/ghc-req'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ghc-req
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88c3fd7 !6 Rebuilt for ghc-data-default Merge pull request !6 from epol/master