brancher: do not get tree if there's no revs

iterative · Jan 22, 2020 · 5f8b1f7 · 5f8b1f7
1 parent d942542
commit 5f8b1f7
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/dvc/repo/brancher.py b/dvc/repo/brancher.py
@@ -42,8 +42,9 @@ def brancher(  # noqa: E302
             revs.extend(scm.list_tags())
 
     try:
-        for sha, names in group_by(scm.resolve_rev, revs).items():
-            self.tree = scm.get_tree(sha)
-            yield ", ".join(names)
+        if revs:
+            for sha, names in group_by(scm.resolve_rev, revs).items():
+                self.tree = scm.get_tree(sha)
+                yield ", ".join(names)
     finally:
         self.tree = saved_tree