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-rw-r--r--src/pip/_internal/models/link.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/pip/_internal/models/link.py b/src/pip/_internal/models/link.py
index 765dbce2c..9dd3160d5 100644
--- a/src/pip/_internal/models/link.py
+++ b/src/pip/_internal/models/link.py
@@ -61,7 +61,7 @@ class LinkHash:
# against Hashes when hash-checking is needed. This is easier to debug than
# proactively discarding an invalid hex digest, as we handle incorrect hashes
# and malformed hashes in the same place.
- r"[#&]({choices})=([^&]+)".format(
+ r"[#&]({choices})=([^&]*)".format(
choices="|".join(re.escape(hash_name) for hash_name in _SUPPORTED_HASHES)
),
)