$ git clone -n https://gitee.com/wency_cn/vsftpd_1770726483.git /var/lib/mock/dist-an23-build-513087-75099/root/chroot_tmpdir/scmroot/vsftpd_1770726483
Cloning into '/var/lib/mock/dist-an23-build-513087-75099/root/chroot_tmpdir/scmroot/vsftpd_1770726483'...
$ git fetch origin 55a8a88e9ab1af952ab7fb10949f1f0fd9363ed5:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/vsftpd_1770726483
 * [new ref]         55a8a88e9ab1af952ab7fb10949f1f0fd9363ed5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 55a8a88 Update code from upstream