$ git clone -n https://gitee.com/wency_cn/sendmail_1770760483.git /var/lib/mock/dist-an23-build-513312-75099/root/chroot_tmpdir/scmroot/sendmail_1770760483
Cloning into '/var/lib/mock/dist-an23-build-513312-75099/root/chroot_tmpdir/scmroot/sendmail_1770760483'...
$ git fetch origin c930e6f988c285f1a9d95d31fa8d92ea17439c2b:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/sendmail_1770760483
 * [new ref]         c930e6f988c285f1a9d95d31fa8d92ea17439c2b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c930e6f Update code from upstream