diff --git a/ci-operator/step-registry/medik8s/catalogsource/medik8s-catalogsource-ref.yaml b/ci-operator/step-registry/medik8s/catalogsource/medik8s-catalogsource-ref.yaml
index fcac4ba065116..17c23703be149 100644
--- a/ci-operator/step-registry/medik8s/catalogsource/medik8s-catalogsource-ref.yaml
+++ b/ci-operator/step-registry/medik8s/catalogsource/medik8s-catalogsource-ref.yaml
@@ -30,6 +30,15 @@ ref:
       If empty, the step resolves the latest commit from GIT_REF (default: main).
       Only used in konflux mode.
     default: ""
+  - name: MULTISTAGE_PARAM_OVERRIDE_FBC_COMMIT_SHA
+    documentation: |-
+      Receives FBC commit SHA from Gangway pod_spec_options.envs overrides.
+      ci-operator's applyEnvOverrides stores env vars with the full prefixed
+      key name in TestEnvironment, but generateParams only injects env vars
+      matching declared step parameters. Declaring this parameter makes the
+      override reachable in the step pod. The step script reads it via:
+      FBC_COMMIT_SHA="${MULTISTAGE_PARAM_OVERRIDE_FBC_COMMIT_SHA:-${FBC_COMMIT_SHA:-}}"
+    default: ""
   - name: CATALOG_IMAGE_REF
     documentation: |-
       Direct catalog image reference. Required when CATALOG_MODE=direct.
diff --git a/ci-operator/step-registry/medik8s/disconnected-catalogsource/medik8s-disconnected-catalogsource-commands.sh b/ci-operator/step-registry/medik8s/disconnected-catalogsource/medik8s-disconnected-catalogsource-commands.sh
index 9c4a458934cf3..8152cc21442ed 100755
--- a/ci-operator/step-registry/medik8s/disconnected-catalogsource/medik8s-disconnected-catalogsource-commands.sh
+++ b/ci-operator/step-registry/medik8s/disconnected-catalogsource/medik8s-disconnected-catalogsource-commands.sh
@@ -11,7 +11,7 @@ declare CATALOG_SOURCE_NAME="${CATALOG_SOURCE_NAME:-medik8s-catalog}"
 declare IDMS_NAME="${IDMS_NAME:-medik8s-disconnected}"
 declare OCP_VERSION="${FBC_OCP_VERSION:-${OCP_VERSION:-}}"
 declare GIT_REF="${GIT_REF:-main}"
-declare FBC_COMMIT_SHA="${FBC_COMMIT_SHA:-}"
+declare FBC_COMMIT_SHA="${MULTISTAGE_PARAM_OVERRIDE_FBC_COMMIT_SHA:-${FBC_COMMIT_SHA:-}}"
 # shellcheck disable=SC2034 # used by medik8s-lib.sh verify_fbc_image()
 declare FBC_SHA_PINNED="${FBC_COMMIT_SHA:+true}"
 if [[ ! -s "${SHARED_DIR}/workload_image" ]]; then
diff --git a/ci-operator/step-registry/medik8s/disconnected-catalogsource/medik8s-disconnected-catalogsource-ref.yaml b/ci-operator/step-registry/medik8s/disconnected-catalogsource/medik8s-disconnected-catalogsource-ref.yaml
index 0e2f99fe1e44f..56590b48a03e3 100644
--- a/ci-operator/step-registry/medik8s/disconnected-catalogsource/medik8s-disconnected-catalogsource-ref.yaml
+++ b/ci-operator/step-registry/medik8s/disconnected-catalogsource/medik8s-disconnected-catalogsource-ref.yaml
@@ -35,6 +35,15 @@ ref:
       Pin to a specific dragonfly/rhwa-fbc commit SHA for reproducibility.
       If empty, the step resolves the latest commit from GIT_REF.
     default: ""
+  - name: MULTISTAGE_PARAM_OVERRIDE_FBC_COMMIT_SHA
+    documentation: |-
+      Receives FBC commit SHA from Gangway pod_spec_options.envs overrides.
+      ci-operator's applyEnvOverrides stores env vars with the full prefixed
+      key name in TestEnvironment, but generateParams only injects env vars
+      matching declared step parameters. Declaring this parameter makes the
+      override reachable in the step pod. The step script reads it via:
+      FBC_COMMIT_SHA="${MULTISTAGE_PARAM_OVERRIDE_FBC_COMMIT_SHA:-${FBC_COMMIT_SHA:-}}"
+    default: ""
   - name: MEDIK8S_PACKAGES
     documentation: |-
       Comma-separated list of medik8s operator package names to mirror.