$ git clone -n https://gitee.com/wency_cn/cups.git /var/lib/mock/dist-an23-build-493785-74562/root/chroot_tmpdir/scmroot/cups
Cloning into '/var/lib/mock/dist-an23-build-493785-74562/root/chroot_tmpdir/scmroot/cups'...
$ git fetch origin 974a500ab39af1331a520be80c1b0b55ac30eaa7:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/cups
 * [new ref]         974a500ab39af1331a520be80c1b0b55ac30eaa7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 974a500 Update code from upstream