$ git clone -n https://gitee.com/opencloudos-stream/ghc-vector.git /var/lib/mock/dist-oc9-epol-build-214834-80800/root/chroot_tmpdir/scmroot/ghc-vector
Cloning into '/var/lib/mock/dist-oc9-epol-build-214834-80800/root/chroot_tmpdir/scmroot/ghc-vector'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ghc-vector
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9d3b79 !4 Rebuilt for ghc-primitive Merge pull request !4 from brucezhang/master