$ git clone -n https://gitee.com/src-opencloudos-rpms/maven-mapping.git /var/lib/mock/dist-oc9-build-50561-14595/root/chroot_tmpdir/scmroot/maven-mapping
Cloning into '/var/lib/mock/dist-oc9-build-50561-14595/root/chroot_tmpdir/scmroot/maven-mapping'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/maven-mapping
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9866d02 import maven-mapping-3.0.0-2.tl4