$ git clone -n https://gitee.com/wency_cn/cups_1770736107.git /var/lib/mock/dist-an23-build-513184-75099/root/chroot_tmpdir/scmroot/cups_1770736107
Cloning into '/var/lib/mock/dist-an23-build-513184-75099/root/chroot_tmpdir/scmroot/cups_1770736107'...
$ git fetch origin 3f11af8b588def16b68727a5860947c8a30fcd0c:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/cups_1770736107
 * [new ref]         3f11af8b588def16b68727a5860947c8a30fcd0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f11af8 Update code from upstream