$ git clone -n https://gitee.com/src-opencloudos-rpms/tmpwatch.git /var/lib/mock/dist-oc9-build-61251-16463/root/chroot_tmpdir/scmroot/tmpwatch
Cloning into '/var/lib/mock/dist-oc9-build-61251-16463/root/chroot_tmpdir/scmroot/tmpwatch'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tmpwatch
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c44dc20 import tmpwatch-2.11-4.tl4