Add list of branches to log-message for failed to find SCS warning

This to make it easier to see for which branches we have searched
with.

Change-Id: Ice79566d357849e53aa9c2e498b64daf0f705684

src/main/java/com/googlesource/gerrit/plugins/eventseiffel/parsing/EiffelEventParserImpl.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/eventseiffel/parsing/EiffelEventParserImpl.java b/src/main/java/com/googlesource/gerrit/plugins/eventseiffel/parsing/EiffelEventParserImpl.java
index b2320b5..64a370b 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/eventseiffel/parsing/EiffelEventParserImpl.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/eventseiffel/parsing/EiffelEventParserImpl.java
@@ -301,17 +301,17 @@
           throw new EventParsingException(
               e, "Unable to get branches for: %s:%s", projectName, tagName);
         }
+        List<String> branches =
+            refs.stream()
+                .map(Ref::getName)
+                .filter(branch -> !branch.equals(RefNames.REFS_HEADS + "master"))
+                .collect(Collectors.toList());
         try {
-          List<String> branches =
-              refs.stream()
-                  .map(Ref::getName)
-                  .filter(branch -> !branch.equals(RefNames.REFS_HEADS + "master"))
-                  .collect(Collectors.toList());
           scsId = retryer.call(() -> findSourceChangeEventKey(projectName, commitId, branches));
         } catch (RetryException | ExecutionException e) {
           logger.atWarning().withCause(e).log(
-              "Failed to find SCS for %s in %s when trying to create CD for tag %s",
-              commitId, projectName, tagName);
+              "Failed to find SCS for %s in %s for one of the branches (%s) when trying to create CD for tag %s",
+              commitId, projectName, String.join(", ", branches), tagName);
         }
       }