In the survey guide, ask participants to not copy-paste summary to the commit message.

survey_guide.md

@@ -19,7 +19,8 @@ using the button on the top right.
 We understand that the repositories and the commits we show may be 
 unfamiliar to you. In order to help, we used a LLM to generate a 
 summary of the commit - you can see the summary by opening the 
-dropdown right above the commit message edit field.
+dropdown right above the commit message edit field. _Please, do not
+copy-paste anything from this summary into the commit message._
 
 During the study, we collect all keystrokes made _in a 
 text window_, as well as the resulting message.