$ git clone -n https://gitee.com/opencloudos-stream/ghc-blaze-textual.git /var/lib/mock/dist-oc9-epol-build-101574-65856/root/chroot_tmpdir/scmroot/ghc-blaze-textual
Cloning into '/var/lib/mock/dist-oc9-epol-build-101574-65856/root/chroot_tmpdir/scmroot/ghc-blaze-textual'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ghc-blaze-textual
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 748a2e0 update