help understanding what's possible with source control integration into issue tracking software

Question

This is related to (but not identical to) "How important is version control integration with your bug tracking software?"

I am currently using JIRA as issue/task tracking software with a small team, for potential evaluation for broader use in our company. Because we use SurroundSCM, and JIRA does not support either SurroundSCM or the general SCCI, I can't use the two together and I have a hard time understanding the tangible benefits of integration with issue tracking + source control integration.

If you are experienced in this area, could you please post (one feature per answer please) a tangible example of how issue tracking + source control integration has made your job easier / more reliable? I can only think of one area which I will post too.

Answer 1

Easily referencing issues in source-control commits, and source-control revisions in issues.

If the source control software and issue tracking systems have a web interface, then it's possible to use URLs as linkage, but this is kind of cumbersome.