After updating to de-50 Repository table's name field length is not increased from 75 to 200.
According to Fix Pack 50 this change is expected:
LPS-77842 - increases the character limit that can be held in the name column of the Respository table to match that of the portletId column (200 character limit). This allows Users to add a new row in the Repository table for long portletId's. A new upgrade process was also added to the Repository Table to allow for proper database changes for existing Repository table data.