pygit2: return tz_offset in seconds from UTC

Author: pmrowla

src/scmrepo/git/backend/pygit2/__init__.py

@@ -401,15 +401,15 @@ def resolve_commit(self, rev: str) -> "GitCommit":
         return GitCommit(
             str(commit.id),
             commit.commit_time,
-            commit.commit_time_offset,
+            commit.commit_time_offset * 60,
             commit.message,
             [str(parent) for parent in commit.parent_ids],
             commit.committer.name,
             commit.committer.email,
             commit.author.name,
             commit.author.email,
             commit.author.time,
-            commit.author.offset,
+            commit.author.offset * 60,
         )
 
     def _get_stash(self, ref: str):
@@ -962,7 +962,7 @@ def get_tag(self, name: str) -> Optional[Union[str, "GitTag"]]:
                     tag.tagger.name,
                     tag.tagger.email,
                     tag.tagger.time,
-                    tag.tagger.offset,
+                    tag.tagger.offset * 60,
                     tag.message,
                 )
         except KeyError: