Add no_branch_ref_detection action input

README.md

@@ -64,6 +64,7 @@ Once installed, run it from your AI agent with `/linear-release-setup` (or just
 | `include_paths` | No       |          | Filter commits by file paths (comma-separated globs for monorepos)                                                                                                                                                            |
 | `include_subjects` | No    |          | Filter commits whose subject (first line) matches a regular expression. Composes with `include_paths`.                                                                                                                        |
 | `issue_pattern` | No       |          | Extract issue identifiers captured by group 1 of a regular expression from commit subjects. Additive to the built-in detection.                                                                                                |
+| `no_branch_ref_detection` | No | `false` | Disable issue detection from git branch refs during `sync`. Maps to CLI `--no-branch-ref-detection`. |
 | `base_ref`      | No       |          | Override the `sync` scan base. Exclusive: scans `<base_ref>..HEAD`                                                                                                                                                            |
 | `links`         | No       |          | Links to attach to the targeted release, one per line. Each value must be either an absolute URL or `Label=URL`.                                                                                                              |
 | `documents`     | No       |          | Documents to attach to the targeted release, one per line as `[Title=]path/to/file.md` (title inferred from the filename if omitted). Existing documents with the same title are updated.                                       |
@@ -183,6 +184,19 @@ Use `issue_pattern` when commit subjects reference issues in a convention the bu
     issue_pattern: '\[([A-Z]+-\d+)\]'
 ```
 
+### Disable branch ref detection
+
+Set `no_branch_ref_detection: true` for `sync` to ignore git branch refs when detecting issues. This prevents an unrelated branch that points at a released commit from contributing its issue identifier.
+
+Commit-message issue detection, source branches recorded in merge messages, PR/MR references, and custom `issue_pattern` matching remain enabled. This also disables legitimate issue attribution that relies only on branch refs, such as fast-forward commits with no issue reference in their messages. The default is `false`.
+
+```yaml
+- uses: linear/linear-release-action@v0
+  with:
+    access_key: ${{ secrets.LINEAR_ACCESS_KEY }}
+    no_branch_ref_detection: true
+```
+
 ### Scan base override
 
 Use `base_ref` to explicitly choose the exclusive lower bound for `sync`'s commit scan. This is useful when the automatically selected release baseline is not the range you want for a custom branching workflow, first-time onboarding, or migration.

action.yml

@@ -35,6 +35,10 @@ inputs:
   issue_pattern:
     description: 'Extract issue identifiers captured by group 1 of a regular expression from commit subjects (e.g., "\[([A-Z]+-\d+)\]"). Additive to the built-in detection.'
     required: false
+  no_branch_ref_detection:
+    description: 'When "true", disable issue detection from git branch refs during sync. Commit-message detection, including source branches in merge messages, remains enabled.'
+    required: false
+    default: "false"
   base_ref:
     description: "Override the sync scan base. Exclusive: scans <base_ref>..HEAD."
     required: false
@@ -104,6 +108,7 @@ runs:
         INPUT_INCLUDE_PATHS: ${{ inputs.include_paths }}
         INPUT_INCLUDE_SUBJECTS: ${{ inputs.include_subjects }}
         INPUT_ISSUE_PATTERN: ${{ inputs.issue_pattern }}
+        INPUT_NO_BRANCH_REF_DETECTION: ${{ inputs.no_branch_ref_detection }}
         INPUT_BASE_REF: ${{ inputs.base_ref }}
         INPUT_LINKS: ${{ inputs.links }}
         INPUT_DOCUMENTS: ${{ inputs.documents }}

run.sh

@@ -67,6 +67,15 @@ fi
 [[ -n "${INPUT_RELEASE_NOTES:-}" ]] && args+=("--release-notes-file=${INPUT_RELEASE_NOTES}")
 [[ -n "${INPUT_TIMEOUT:-}" ]] && args+=("--timeout=${INPUT_TIMEOUT}")
 
+case "${INPUT_NO_BRANCH_REF_DETECTION:-false}" in
+  true)        args+=("--no-branch-ref-detection") ;;
+  false|"")    ;;
+  *)
+    echo "::error::Invalid no_branch_ref_detection '${INPUT_NO_BRANCH_REF_DETECTION}'. Must be: true or false"
+    exit 1
+    ;;
+esac
+
 case "${INPUT_DRY_RUN:-false}" in
   true)        args+=("--dry-run") ;;
   false|"")    ;;