$ git clone -n https://gitee.com/opencloudos-stream/enca.git /var/lib/mock/dist-oc9-epol-build-90789-59106/root/chroot_tmpdir/scmroot/enca
Cloning into '/var/lib/mock/dist-oc9-epol-build-90789-59106/root/chroot_tmpdir/scmroot/enca'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/enca
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f509b0d package init