diff --git a/packages/mosaic/framework/tools/git/pr-ci-wait.sh b/packages/mosaic/framework/tools/git/pr-ci-wait.sh
index 4844a21..5277bc6 100755
--- a/packages/mosaic/framework/tools/git/pr-ci-wait.sh
+++ b/packages/mosaic/framework/tools/git/pr-ci-wait.sh
@@ -30,12 +30,19 @@ EOF
 # get_remote_host and get_gitea_token are provided by detect-platform.sh
 
 extract_state_from_status_json() {
-    python3 - <<'PY'
+    # Capture piped JSON BEFORE invoking `python3 - <<PY`. The heredoc binds
+    # stdin to the Python program text — so json.load(sys.stdin) inside would
+    # try to re-read stdin after `-` already consumed it for the program,
+    # yielding EOF and returning "unknown" every time. Pass payload via env.
+    local payload
+    payload=$(cat)
+    PR_CI_STATUS_JSON="$payload" python3 - <<'PY'
 import json
+import os
 import sys
 
 try:
-    payload = json.load(sys.stdin)
+    payload = json.loads(os.environ.get("PR_CI_STATUS_JSON", ""))
 except Exception:
     print("unknown")
     raise SystemExit(0)
@@ -66,12 +73,16 @@ PY
 }
 
 print_status_summary() {
-    python3 - <<'PY'
+    # Same stdin-collision fix as extract_state_from_status_json above.
+    local payload
+    payload=$(cat)
+    PR_CI_STATUS_JSON="$payload" python3 - <<'PY'
 import json
+import os
 import sys
 
 try:
-    payload = json.load(sys.stdin)
+    payload = json.loads(os.environ.get("PR_CI_STATUS_JSON", ""))
 except Exception:
     print("[pr-ci-wait] status payload unavailable")
     raise SystemExit(0)