The following list of commit SHAs, and the committers of each, need to have a DCO doc added:

0a961b00cd990d0974ce5775c330679418fc6905 xuxm@dsp.ac.cn
5c9d526d95ae18f471153c8ad8acbc0663b0c84f xuxm@dsp.ac.cn
cd3fa34ae9eff664d19ae675ab924f2ffb93d2aa xuxm@dsp.ac.cn
d99a0d9af63666f9934d6f26654e6716d1a5b7ce xuxm@dsp.ac.cn
f95fc6451c1531e2b9ee49963a4848239f3eeeb8 xuxm@dsp.ac.cn
427c711f3b4bdc4f8b3dc076e3458a61486af48a fengfyang@tencent.com
05442a0b6e354a49bf39bc5fc0e40f6c00c9eb5e fengjiaxin22@163.com
cb3d1ca00e378df9ab0386a6d5065dd593e28d6e fengjiaxin22@163.com
1b281d365931897788eba415816cc4ab96758c5f fengjiaxin22@163.com

Further details can be found here: https://lists.akraino.org/g/ptl/message/42