$ git clone -n https://gitee.com/opencloudos-stream/ostree.git /var/lib/mock/dist-ocs23-build-48021-2087/root/chroot_tmpdir/scmroot/ostree
Cloning into '/var/lib/mock/dist-ocs23-build-48021-2087/root/chroot_tmpdir/scmroot/ostree'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ostree
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b333ac6 !2 pack files because gobject-introspection upgrade Merge pull request !2 from cunshunxia/master