$ git clone -n https://gitee.com/opencloudos-stream/appstream /var/lib/mock/dist-oc9-epol-build-67197-30947/root/chroot_tmpdir/scmroot/appstream
Cloning into '/var/lib/mock/dist-oc9-epol-build-67197-30947/root/chroot_tmpdir/scmroot/appstream'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/appstream
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c945955 !1 appstream Init Merge pull request !1 from chairou/master