Git log: reset contained branches cache on refresh

plugins/git4idea/src/git4idea/history/wholeTree/DetailsCache.java

@@ -93,4 +93,10 @@ public class DetailsCache {
       return myBranches.get(new Pair<VirtualFile, AbstractHash>(root, hash));
     }
   }
+
+  public void resetBranchesCache() {
+    synchronized (myLock) {
+      myBranches.clear();
+    }
+  }
 }

plugins/git4idea/src/git4idea/history/wholeTree/GitLogUI.java

@@ -1063,6 +1063,7 @@ public class GitLogUI implements Disposable {
   private void reloadRequest() {
     myState = StepType.CONTINUE;
     final int was = myTableModel.getRowCount();
+    myDetailsCache.resetBranchesCache();
     final Collection<String> startingPoints = mySelectedBranch == null ? Collections.<String>emptyList() : Collections.singletonList(mySelectedBranch);
     myDescriptionRenderer.resetIcons();
     if (StringUtil.isEmptyOrSpaces(myPreviousFilter)) {