$ git clone -n https://gitee.com/opencloudos-stream/ghc.git /var/lib/mock/dist-oc9-epol-build-186410-80293/root/chroot_tmpdir/scmroot/ghc
Cloning into '/var/lib/mock/dist-oc9-epol-build-186410-80293/root/chroot_tmpdir/scmroot/ghc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ghc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b4c9c1 !3 fix macro error Merge pull request !3 from brucezhang/master