Feature: Customize PR branch name suffix

.changeset/good-mice-brake.md

@@ -0,0 +1,5 @@
+---
+"@changesets/action": minor
+---
+
+Allow a custom PR branch name with prBranchSuffix

README.md

@@ -14,6 +14,8 @@ This action for [Changesets](https://github.com/changesets/changesets) creates a
 - createGithubReleases - A boolean value to indicate whether to create Github releases after `publish` or not. Default to `true`
 - commitMode - Specifies the commit mode. Use `"git-cli"` to push changes using the Git CLI, or `"github-api"` to push changes via the GitHub API. When using `"github-api"`, all commits and tags are GPG-signed and attributed to the user or app who owns the `GITHUB_TOKEN`. Default to `git-cli`.
 - cwd - Changes node's `process.cwd()` if the project is not located on the root. Default to `process.cwd()`
+- branch - Sets the branch in which the action will run. Default to `github.ref_name`
+- prBranchSuffix - The suffix to include after `changeset-release/` in the PR branch. Defaults to the `branch` variable.
 
 ### Outputs
 

action.yml

@@ -36,6 +36,9 @@ inputs:
       or app who owns the GITHUB_TOKEN.
     required: false
     default: "git-cli"
+  prBranchSuffix:
+    description: The suffix to include after `changeset-release/` in the PR branch. Defaults to the `branch` variable.
+    required: false
   branch:
     description: Sets the branch in which the action will run. Default to `github.ref_name` if not provided
     required: false

src/index.ts

@@ -126,6 +126,7 @@ const getOptionalInput = (name: string) => core.getInput(name) || undefined;
         commitMessage: getOptionalInput("commit"),
         hasPublishScript,
         branch: getOptionalInput("branch"),
+        prBranchSuffix: getOptionalInput("prBranchSuffix"),
       });
 
       core.setOutput("pullRequestNumber", String(pullRequestNumber));

src/run.ts

@@ -257,6 +257,7 @@ type VersionOptions = {
   hasPublishScript?: boolean;
   prBodyMaxCharacters?: number;
   branch?: string;
+  prBranchSuffix?: string;
 };
 
 type RunVersionResult = {
@@ -273,8 +274,9 @@ export async function runVersion({
   hasPublishScript = false,
   prBodyMaxCharacters = MAX_CHARACTERS_PER_MESSAGE,
   branch = github.context.ref.replace("refs/heads/", ""),
+  prBranchSuffix,
 }: VersionOptions): Promise<RunVersionResult> {
-  let versionBranch = `changeset-release/${branch}`;
+  let versionBranch = `changeset-release/${prBranchSuffix ?? branch}`;
 
   let { preState } = await readChangesetState(cwd);