$ git clone -n https://gitee.com/src-opencloudos-rpms/rpmdevtools.git /var/lib/mock/dist-oc9-build-71921-47610/root/chroot_tmpdir/scmroot/rpmdevtools
Cloning into '/var/lib/mock/dist-oc9-build-71921-47610/root/chroot_tmpdir/scmroot/rpmdevtools'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/rpmdevtools
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f25b74 import rpmdevtools-9.6-4.tl4