git prune --no-expire
'
+test_expect_success 'trivial prune with bitmaps enabled' '
+ git repack -adb &&
+ blob=$(echo bitmap-unreachable-blob | git hash-object -w --stdin) &&
+ git prune --expire=now &&
+ git cat-file -e HEAD &&
+ test_must_fail git cat-file -e $blob
+'
+
test_done