$ git clone -n https://gitee.com/wency_cn/vsftpd_1770726320.git /var/lib/mock/dist-an23-build-513084-75099/root/chroot_tmpdir/scmroot/vsftpd_1770726320
Cloning into '/var/lib/mock/dist-an23-build-513084-75099/root/chroot_tmpdir/scmroot/vsftpd_1770726320'...
$ git fetch origin 1b1ca783647cb7999a553db3e3e92fc63e1fd2f9:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/vsftpd_1770726320
 * [new ref]         1b1ca783647cb7999a553db3e3e92fc63e1fd2f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b1ca78 Update code from upstream