diff --git a/gitsrht/blueprints/api/porcelain.py b/gitsrht/blueprints/api/porcelain.py
index 51d8db3..65f0626 100644
--- a/gitsrht/blueprints/api/porcelain.py
+++ b/gitsrht/blueprints/api/porcelain.py
@@ -20,19 +20,17 @@ from srht.validation import Validation
 porcelain = Blueprint("api_porcelain", __name__)
 
 # See also gitsrht-update-hook/types.go
-def commit_to_dict(c, repo):
-    author = repo.author(c)
-    committer = repo.committer(c)
+def commit_to_dict(c):
     return {
         "id": str(c.id),
         "short_id": c.short_id,
         "author": {
-            "email": author.email,
-            "name": author.name,
+            "email": c.author.email,
+            "name": c.author.name,
         },
         "committer": {
-            "email": committer.email,
-            "name": committer.name,
+            "email": c.committer.email,
+            "name": c.committer.name,
         },
         "timestamp": commit_time(c),
         "message": c.message,
@@ -155,7 +153,7 @@ def repo_commits_GET(username, reponame, ref, path):
             next_id = str(commits[-1].id)
         return {
             "next": next_id,
-            "results": [commit_to_dict(c, repo) for c in commits],
+            "results": [commit_to_dict(c) for c in commits],
             # TODO: Track total commits per repo per branch
             "total": -1,
             "results_per_page": commits_per_page
diff --git a/gitsrht/blueprints/repo.py b/gitsrht/blueprints/repo.py
index d9426f8..bdbd866 100644
--- a/gitsrht/blueprints/repo.py
+++ b/gitsrht/blueprints/repo.py
@@ -503,7 +503,7 @@ def log(owner, repo, ref, path):
 
         has_more = commits and len(commits) == 21
 
-        author_emails = set((repo.author(commit).email for commit in commits[:20]))
+        author_emails = set((commit.author.email for commit in commits[:20]))
         authors = {user.email:user for user in User.query.filter(User.email.in_(author_emails)).all()}
         return render_template("log.html", view="log",
                 owner=owner, repo=repo, ref=ref, path=path.split("/"),
@@ -671,7 +671,7 @@ def refs_rss(owner, repo):
 
     def _ref_sort_key(ref):
         target = git_repo.get(ref.target)
-        author = repo.author(target)
+        author = target.author if hasattr(target, 'author') else target.get_object().author
         return author.time + author.offset
 
     references = sorted(references, key=_ref_sort_key, reverse=True)[:20]
diff --git a/gitsrht/git.py b/gitsrht/git.py
index 00f6fbc..3c67241 100644
--- a/gitsrht/git.py
+++ b/gitsrht/git.py
@@ -1,6 +1,6 @@
 from collections import deque
 from datetime import datetime, timedelta, timezone
-from pygit2 import Repository as GitRepository, Mailmap, Tag
+from pygit2 import Repository as GitRepository, Tag
 from markupsafe import Markup, escape
 from stat import filemode
 import pygit2
@@ -98,7 +98,6 @@ def get_log(git_repo, commit, path="", commits_per_page=20, until=None):
 class Repository(GitRepository):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        self._mailmap = Mailmap.from_repository(self)
 
     def __enter__(self):
         return self
@@ -123,18 +122,6 @@ class Repository(GitRepository):
         else:
             return None
 
-    def author(self, obj):
-        sig = obj.author if hasattr(obj, "author") else obj.get_object().author
-        return self._mailmap.resolve_signature(sig)
-
-    def committer(self, obj):
-        sig = obj.committer if hasattr(obj, "committer") else obj.get_object().committer
-        return self._mailmap.resolve_signature(sig)
-
-    def tagger(self, obj):
-        sig = obj.tagger if hasattr(obj, "tagger") else obj.get_object().tagger
-        return self._mailmap.resolve_signature(sig)
-
     @property
     def is_empty(self):
         return len(self.raw_listall_branches(pygit2.GIT_BRANCH_LOCAL)) == 0
diff --git a/gitsrht/rss.py b/gitsrht/rss.py
index e17496d..fe46e63 100644
--- a/gitsrht/rss.py
+++ b/gitsrht/rss.py
@@ -45,7 +45,7 @@ def ref_to_item(repo, reference):
     with GitRepository(repo.path) as git_repo:
         target = git_repo.get(reference.target)
 
-    author = repo.author(target)
+    author = target.author if hasattr(target, 'author') else target.get_object().author
     time = aware_time(author).strftime(RFC_822_FORMAT)
     url = ref_url(repo, reference)
     description = target.message.strip().replace("\n", "<br />")
@@ -64,8 +64,7 @@ def commit_to_item(repo, commit):
     time = aware_time(commit.author).strftime(RFC_822_FORMAT)
     url = commit_url(repo, commit)
     title, description = commit_title_description(commit)
-    author = repo.author(commit)
-    author = f"{author.email} ({author.name})"
+    author = f"{commit.author.email} ({commit.author.name})"
 
     element = ET.Element("item")
     ET.SubElement(element, "title").text = title
diff --git a/gitsrht/templates/blame.html b/gitsrht/templates/blame.html
index bd1d377..35fa71b 100644
--- a/gitsrht/templates/blame.html
+++ b/gitsrht/templates/blame.html
@@ -27,13 +27,12 @@ pre, body {
           repo=repo.name,
           ref=ref)}}"
       >{{commit.id.hex[:8]}}</a> &mdash;
-      {% set author = repo.author(commit) %}
-      {% set author_user = lookup_user(author.email) %}
+      {% set author_user = lookup_user(commit.author.email) %}
       {% if author_user %}
       <a href="{{url_for("public.user_index",
-        username=author_user.username)}}">{{author.name}}</a>
+        username=author_user.username)}}">{{commit.author.name}}</a>
       {% else %}
-      {{author.name}}
+      {{commit.author.name}}
       {% endif %}
       {{trim_commit(commit.message)}}
       <span class="text-muted">
diff --git a/gitsrht/templates/blob.html b/gitsrht/templates/blob.html
index c354a0d..09bb5eb 100644
--- a/gitsrht/templates/blob.html
+++ b/gitsrht/templates/blob.html
@@ -24,13 +24,12 @@ pre {
           repo=repo.name,
           ref=ref)}}"
       >{{commit.id.hex[:8]}}</a> &mdash;
-      {% set author = repo.author(commit) %}
-      {% set author_user = lookup_user(author.email) %}
+      {% set author_user = lookup_user(commit.author.email) %}
       {% if author_user %}
       <a href="{{url_for("public.user_index",
-        username=author_user.username)}}">{{author.name}}</a>
+        username=author_user.username)}}">{{commit.author.name}}</a>
       {% else %}
-      {{author.name}}
+      {{commit.author.name}}
       {% endif %}
       {{trim_commit(commit.message)}}
       <span class="text-muted">
diff --git a/gitsrht/templates/refs.html b/gitsrht/templates/refs.html
index 1fc61b4..2deae85 100644
--- a/gitsrht/templates/refs.html
+++ b/gitsrht/templates/refs.html
@@ -38,11 +38,11 @@
           <h4 style="margin-bottom: 0.5rem">
             {% if isinstance(tag, pygit2.Commit) %}
             {% set refname = commit.id.hex %}
-            {% set author = repo.author(commit) %}
+            {% set author = commit.author %}
             {{ref[len("refs/tags/"):]}}
             {% else %}
             {% set refname = tag.raw_name %}
-            {% set author = repo.tagger(tag) %}
+            {% set author = tag.tagger %}
             <a href="{{url_for("repo.ref",
                 owner=repo.owner.canonical_name,
                 repo=repo.name,
diff --git a/gitsrht/templates/tree.html b/gitsrht/templates/tree.html
index 1c35d17..d987083 100644
--- a/gitsrht/templates/tree.html
+++ b/gitsrht/templates/tree.html
@@ -16,13 +16,12 @@
           repo=repo.name,
           ref=ref)}}"
       >{{commit.id.hex[:8]}}</a> &mdash;
-      {% set author = repo.author(commit) %}
-      {% set author_user = lookup_user(author.email) %}
+      {% set author_user = lookup_user(commit.author.email) %}
       {% if author_user %}
       <a href="{{url_for("public.user_index",
-        username=author_user.username)}}">{{author.name}}</a>
+        username=author_user.username)}}">{{commit.author.name}}</a>
       {% else %}
-      {{author.name}}
+      {{commit.author.name}}
       {% endif %}
       {{trim_commit(commit.message)}}
       <span class="text-muted">
diff --git a/gitsrht/templates/utils.html b/gitsrht/templates/utils.html
index 174f7a3..9a9637d 100644
--- a/gitsrht/templates/utils.html
+++ b/gitsrht/templates/utils.html
@@ -93,13 +93,12 @@ endif %}{% endfor %}
   >{{c.id.hex[:8]}}</a>
   {% endif %}
   &mdash;
-  {% set author = repo.author(c) %}
-  {% set author_user = lookup(author.email) %}
+  {% set author_user = lookup(c.author.email) %}
   {% if author_user %}
   <a href="{{url_for("public.user_index",
-    username=author_user.username)}}">{{author.name}}</a>
+    username=author_user.username)}}">{{c.author.name}}</a>
   {% else %}
-  {{author.name}}
+  {{c.author.name}}
   {% endif %}
   <small class="pull-right">
     <a
diff --git a/gitsrht/types/__init__.py b/gitsrht/types/__init__.py
index 90cb669..f53cfe5 100644
--- a/gitsrht/types/__init__.py
+++ b/gitsrht/types/__init__.py
@@ -148,14 +148,5 @@ class Repository(Base):
             self._git_repo = GitRepository(self.path)
         return self._git_repo
 
-    def author(self, obj):
-        return self.git_repo.author(obj)
-
-    def committer(self, obj):
-        return self.git_repo.committer(obj)
-
-    def tagger(self, obj):
-        return self.git_repo.tagger(obj)
-
 from gitsrht.types.artifact import Artifact
 from gitsrht.types.sshkey import SSHKey