catch badly-formed commit-ish values

1 files changed, 1 insertions, 1 deletions

diff --git a/git-deps b/git-deps
index e20ccb8..41f596d 100755
--- a/git-deps
+++ b/git-deps
@@ -369,7 +369,7 @@ class DependencyDetector(object):
 
         try:
             self.commits[rev] = self.repo.revparse_single(rev)
-        except KeyError:
+        except (KeyError, ValueError):
             raise InvalidCommitish(rev)
 
         return self.commits[rev]