$ git clone -n https://gitee.com/src-opencloudos-rpms/ocpkg /var/lib/mock/dist-oc8-build-67345-28600/root/chroot_tmpdir/scmroot/ocpkg
Cloning into '/var/lib/mock/dist-oc8-build-67345-28600/root/chroot_tmpdir/scmroot/ocpkg'...
$ git fetch origin c49a8eeaa94d66c6bbe1b5658c656d9055191e30:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ocpkg
 * [new ref]         c49a8eeaa94d66c6bbe1b5658c656d9055191e30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c49a8ee fix spec