Redmine

In Redmine, I have been able to configure a git repository, initially served with Gitlab.

Unfortunately, it doesn't recognize the push author. Every commit/push is seen by a single user even if it has been made by another.

For example, Gitlab says:

f2e75770	07/02/2015 12:23 PM	Me	Test 3
7e61dbac	07/02/2015 12:02 PM	User2	Test 2
7e61dbac	07/02/2015 12:01 PM	User3	Test 1

and Redmine says:

f2e75770	07/02/2015 12:23 PM	Me	Test 3
7e61dbac	07/02/2015 12:02 PM	Me	Test 2
7e61dbac	07/02/2015 12:01 PM	Me	Test 1

In the user category of the repository, I only see a single user (Me).

Do you have any idea how to solve this ?