add upstream bug reference

python-pint.spec

@@ -63,6 +63,7 @@ Documentation for the pint module
 %setup -q -n %{pypi_name}-%{version}
 
 # numpy 1.24.x removes np.float np.alen and so on
+# These are already fixed upstream
 grep -rl "dtype=np\.float" . | xargs sed -i -e 's|dtype=np\.float|dtype=float|'
 sed -i pint/testsuite/test_numpy.py \
 	-e 's|dtype=float32|dtype=np.float32|' \
@@ -70,13 +71,11 @@ sed -i pint/testsuite/test_numpy.py \
 	-e 's|np\.alen|len|' \
 	%{nil}
 
-# Passing format_spec = 'n' to Fraction causes TypeError with python3.11 and below,
-# now causes ValueError. Workaround for this
-# https://github.com/python/cpython/commit/3e09f3152e518cdc8779b52943b86812114ce071#diff-f561eb7eb97f832b2698837f52c2c2cf23bdb0b31c69cf1f6aaa560280993316R417
-# FIXME this one must be reported upstream
+# Workaround for https://github.com/hgrecco/pint/issues/1818
 sed -i pint/testsuite/__init__.py -e '115s|except TypeError:|except (TypeError, ValueError):|'
 
 # python 3.12 removes deprecated unittest.assertEquals
+# This is already fixed upstream
 sed -i pint/testsuite/test_contexts.py -e 's|self.assertEquals|self.assertEqual|'
 
 # drop numpy version requirement