$ git clone -n https://gitee.com/src-opencloudos-rpms/sendmail.git /var/lib/mock/dist-oc9-build-63680-16463/root/chroot_tmpdir/scmroot/sendmail
Cloning into '/var/lib/mock/dist-oc9-build-63680-16463/root/chroot_tmpdir/scmroot/sendmail'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/sendmail
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a499bc import sendmail-8.17.1-6.tl4