grep "git index-pack.*--fsck-objects" trace
'
+test_expect_success 'partial clone fetches blobs pointed to by refs even if normally filtered out' '
+ rm -rf src dst &&
+ git init src &&
+ test_commit -C src x &&
+ test_config -C src uploadpack.allowfilter 1 &&
+ test_config -C src uploadpack.allowanysha1inwant 1 &&
+
+ # Create a tag pointing to a blob.
+ BLOB=$(echo blob-contents | git -C src hash-object --stdin -w) &&
+ git -C src tag myblob "$BLOB" &&
+
+ git clone --filter="blob:none" "file://$(pwd)/src" dst 2>err &&
+ ! grep "does not point to a valid object" err &&
+ git -C dst fsck
+'
+
+. "$TEST_DIRECTORY"/lib-httpd.sh
+start_httpd
+
+# Converts bytes into a form suitable for inclusion in a sed command. For
+# example, "printf 'ab\r\n' | hex_unpack" results in '\x61\x62\x0d\x0a'.
+sed_escape () {
+ perl -e '$/ = undef; $input = <>; print unpack("H2" x length($input), $input)' |
+ sed 's/\(..\)/\\x\1/g'
+}
+
+test_expect_success 'upon cloning, check that all refs point to objects' '
+ SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
+ rm -rf "$SERVER" repo &&
+ test_create_repo "$SERVER" &&
+ test_commit -C "$SERVER" foo &&
+ test_config -C "$SERVER" uploadpack.allowfilter 1 &&
+ test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
+
+ # Create a tag pointing to a blob.
+ BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
+ git -C "$SERVER" tag myblob "$BLOB" &&
+
+ # Craft a packfile not including that blob.
+ git -C "$SERVER" rev-parse HEAD |
+ git -C "$SERVER" pack-objects --stdout >incomplete.pack &&
+
+ # Replace the existing packfile with the crafted one. The protocol
+ # requires that the packfile be sent in sideband 1, hence the extra
+ # \x01 byte at the beginning.
+ printf "1,/packfile/!c %04x\\\\x01%s0000" \
+ "$(($(wc -c <incomplete.pack) + 5))" \
+ "$(sed_escape <incomplete.pack)" \
+ >"$HTTPD_ROOT_PATH/one-time-sed" &&
+
+ # Use protocol v2 because the sed command looks for the "packfile"
+ # section header.
+ test_config -C "$SERVER" protocol.version 2 &&
+ test_must_fail git -c protocol.version=2 clone \
+ --filter=blob:none $HTTPD_URL/one_time_sed/server repo 2>err &&
+
+ grep "did not send all necessary objects" err &&
+
+ # Ensure that the one-time-sed script was used.
+ ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
+'
+
+stop_httpd
+
test_done