$ git clone -n https://gitee.com/src-opencloudos-rpms/javapackages-tools.git /var/lib/mock/dist-oc9-build-41780-14591/root/chroot_tmpdir/scmroot/javapackages-tools
Cloning into '/var/lib/mock/dist-oc9-build-41780-14591/root/chroot_tmpdir/scmroot/javapackages-tools'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/javapackages-tools
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da87d59 import javapackages-tools-6.1.0-6.tl4