branchcache: store filtered hash and obsolete hash independently for V3
This will avoid the bug covered in tests/test-branches-obsolete.t when we stop
storing all heads explicitly in V3.
#!/usr/bin/env python3
#
# A tool to help producing large and poorly compressible files
#
# Usage:
# $TESTDIR/seq.py 1000 | $TESTDIR/sha256line.py > my-file.txt
import hashlib
import sys
for line in sys.stdin:
print(hashlib.sha256(line.encode('utf8')).hexdigest())