Using Bridge For Git 2.6.3, received the following email after re-mapping.
Operation: Refresh elements
Message: An unexpected error occurred while refreshing the branch with the latest version of the Endevor repository.
Action: Please contact the administrator.
Internal error: true
Bridge For Git URL: http://clzed00a0008.wellsfargo.com:4036
Release : 18.1
Component : BRIDGE FOR GIT 2.6.3
The system Bridge for Git interfaces with was down. The syncback eventually resolved itself.