From 5b352491d4879a4585b37504eb933b8a3e451878 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Peter=20Rowlands=20=28=EB=B3=80=EA=B8=B0=ED=98=B8=29?=
 <peter@pmrowla.com>
Date: Wed, 19 Aug 2020 21:21:16 +0900
Subject: [PATCH] git: handle rev_parse exception (#4422)

---
 dvc/scm/git.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dvc/scm/git.py b/dvc/scm/git.py
index 5df270bda..98d1e4762 100644
--- a/dvc/scm/git.py
+++ b/dvc/scm/git.py
@@ -405,6 +405,8 @@ class Git(Base):
                 except NotImplementedError:
                     # Fall back to `git rev-parse` for advanced features
                     return self.repo.git.rev_parse(name)
+                except ValueError:
+                    raise RevError(f"unknown Git revision '{name}'")
 
         # Resolve across local names
         sha = _resolve_rev(rev)