$ git clone -n https://gitee.com/src-opencloudos-rpms/javapackages-bootstrap.git /var/lib/mock/dist-oc9-build-62772-16463/root/chroot_tmpdir/scmroot/javapackages-bootstrap
Cloning into '/var/lib/mock/dist-oc9-build-62772-16463/root/chroot_tmpdir/scmroot/javapackages-bootstrap'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/javapackages-bootstrap
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc66c40 import javapackages-bootstrap-1.7.2-8.tl4