When you're pair-programming with someone (one or many developers), in your commit message you can add the name of the developer you're working with directly in the commit message with the following pattern:
to indicate that this commit was done with author login1. If other people have been involved, just use the same pattern by separating each name with commas (,):
Here is an example of a commit message to indicate that you have worked with Alice:
Fix issue on the home page \with[Alice].
Note that this pattern does not have to be placed at the end of the message, it can be put anywhere in the message.
Which names should be indicated in the messages?
The extracted names will be perceived as if they were the authors of the commits. So you have to use the Themis login of the user(s) you're working with.