fix handling of annotated tags

pygit2.revparse_single(annotated_tag) returns a pygit2.Tag object, and
this extra layer of indirection has to be resolved to obtain the
pygit2.Commit.

1 files changed, 4 insertions, 1 deletions

diff --git a/git_deps/detector.py b/git_deps/detector.py
index 1f470ee..4de1282 100644
--- a/git_deps/detector.py
+++ b/git_deps/detector.py
@@ -80,7 +80,10 @@ class DependencyDetector(object):
             return self.commits[rev]
 
         try:
-            self.commits[rev] = self.repo.revparse_single(rev)
+            commit = self.repo.revparse_single(rev)
+            if isinstance(commit, pygit2.Tag):
+                commit = commit.get_object()
+            self.commits[rev] = commit
         except (KeyError, ValueError):
             raise InvalidCommitish(rev)