$ git clone -n https://gitee.com/bbrucezhang/wcdb.git /var/lib/mock/dist-oc9-epol-build-194052-80355/root/chroot_tmpdir/scmroot/wcdb
Cloning into '/var/lib/mock/dist-oc9-epol-build-194052-80355/root/chroot_tmpdir/scmroot/wcdb'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/bbrucezhang/wcdb
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f086b82 add some package