$ git clone -n https://gitee.com/wency_cn/openjpeg2_1770767772.git /var/lib/mock/dist-an23-build-513357-75099/root/chroot_tmpdir/scmroot/openjpeg2_1770767772
Cloning into '/var/lib/mock/dist-an23-build-513357-75099/root/chroot_tmpdir/scmroot/openjpeg2_1770767772'...
$ git fetch origin 9afc4a7e85384be77b7425ffc1b9df33ebfa0f1d:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/openjpeg2_1770767772
 * [new ref]         9afc4a7e85384be77b7425ffc1b9df33ebfa0f1d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9afc4a7 Update code from upstream