I prefer to go the other way. Put the commit ID(s) and/or links in the ticketing system as part of ticket comments. Now if the ticket system changes or is exp

I prefer to go the other way. Put the commit ID(s) and/or links in the ticketing system as part of ticket comments. Now if the ticket system changes or is exported to another system the commit ID(s) will still be in the record. They are much less likely to change plus you can have multiple commits for an issue.