$ git clone -n https://gitee.com/wency_cn/cups_1770758747.git /var/lib/mock/dist-an23-build-513297-75099/root/chroot_tmpdir/scmroot/cups_1770758747
Cloning into '/var/lib/mock/dist-an23-build-513297-75099/root/chroot_tmpdir/scmroot/cups_1770758747'...
$ git fetch origin 1ba544e53826f28c877fa9be19610d5da3a71232:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/cups_1770758747
 * [new ref]         1ba544e53826f28c877fa9be19610d5da3a71232 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ba544e Update code from upstream