$ git clone -n https://gitee.com/opencloudos-stream/ghc-servant.git /var/lib/mock/dist-oc9-epol-build-102015-65946/root/chroot_tmpdir/scmroot/ghc-servant
Cloning into '/var/lib/mock/dist-oc9-epol-build-102015-65946/root/chroot_tmpdir/scmroot/ghc-servant'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ghc-servant
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d3a6f3 update