DCO alternatives?

[rijobro]

We currently require that each git commit be signed with Developer Certificate of Origin (DCO). It frequently trips up first-time contributors to the repository, and seems to have some bugs: #2163 (comment).

I wanted to create this discussion to see if there were any alternatives? For example, would it be sufficient to add the following to the pull request template?

• This code adheres to the requirements of the Developer Certificate of Origin.

Any other solutions would also be appreciated.