When editing any issue I'm seeing this,

trisquel 8 / buntu 16.04 based:
- pagure - commit dd1ea30
- python 3.5.2
- pagure celery worker
- gitolite celery worker
- postgresql
- virtual environment = /opt/pag_01/pag_01-server/venv

venv/bin/pip freeze
alembic==1.0.3
amqp==2.3.2
arrow==0.12.1
asn1crypto==0.24.0
bcrypt==3.1.4
billiard==3.5.0.4
binaryornot==0.4.4
bleach==3.0.2
blinker==1.4
celery==4.2.1
certifi==2018.10.15
cffi==1.11.5
chardet==3.0.4
Click==7.0
cryptography==2.4.1
defusedxml==0.5.0
docutils==0.14
Flask==1.0.2
Flask-WTF==0.14.2
idna==2.7
itsdangerous==1.1.0
Jinja2==2.10
kitchen==1.2.5
kombu==4.2.1
Mako==1.0.7
Markdown==2.6.11
MarkupSafe==1.1.0
munch==2.3.2
Pillow==5.3.0
pkg-resources==0.0.0
psutil==5.4.8
psycopg2==2.7.6.1
pycparser==2.19
pygit2==0.24.0
python-dateutil==2.7.5
python-editor==1.0.3
python-openid-cla==1.2
python-openid-teams==1.1
python3-openid==3.1.0
pytz==2018.7
redis==2.10.6
requests==2.20.1
six==1.11.0
SQLAlchemy==1.2.14
straight.plugin==1.5.0
urllib3==1.24.1
vine==1.1.4
webencodings==0.5.1
Werkzeug==0.14.1
WTForms==2.2.1


Error trace:

[ERROR] celery.app.trace: Task pagure.lib.tasks.update_git[89268b99-b62f-4350-90f9-a8e1a9694921] raised unexpected: AttributeError("'Repository' object has no attribute 'branches'",)
Traceback (most recent call last):
File "/opt/pag_01/pag_01-server/venv/lib/python3.5/site-packages/celery/app/trace.py", line 382, in trace_task
R = retval = fun(args, kwargs)
File "/opt/pag_01/pag_01-server/venv/lib/python3.5/site-packages/celery/app/trace.py", line 641, in protected_call
return self.run(*args, kwargs)
File "/opt/pag_01/pag_01-server/pagure/lib/tasks_utils.py", line 36, in decorated_function
return function(self, session, args, **kwargs)
File "/opt/pag_01/pag_01-server/pagure/lib/tasks.py", line 341, in update_git
result = pagure.lib.git._update_git(obj, project)
File "/opt/pag_01/pag_01-server/pagure/lib/git.py", line 219, in _update_git
with TemporaryClone(repo, obj.repotype, "update_git") as tempclone:
File "/opt/pag_01/pag_01-server/pagure/lib/git.py", line 951, in enter
for branchname in self.repo.branches.remote:
AttributeError: 'Repository' object has no attribute 'branches'


Seems like this issue prevents updating/reloading the page with the content written on the issue, but if the page is manually reloaded you can see the issue/comment updated.

Please let me know if you need any additional info.
Cheers!