diff --git a/lib/pipeline.js b/lib/pipeline.js
index 8540119d..c4f7735a 100644
--- a/lib/pipeline.js
+++ b/lib/pipeline.js
@@ -152,7 +152,7 @@ class PipelineModel extends BaseModel {
 
     /**
      * Attach Screwdriver webhook to the pipeline's repository
-     * @param   webhookUrl    The webhook to be added
+     * @param   {String}    webhookUrl    The webhook to be added
      * @method  addWebhook
      * @return  {Promise}
      */
@@ -193,6 +193,41 @@ class PipelineModel extends BaseModel {
           /* eslint-enable no-understore-dangle */
     }
 
+    /**
+     * Sync PR by looking up the PR's screwdriver.yaml
+     * Update the permutations to be correct
+     * @param   {Integer}   prNum        PR Number
+     * @method syncPR
+     * @return {Promise}
+     */
+    syncPR(prNum) {
+        // Lazy load factory dependency to prevent circular dependency issues
+        // https://nodejs.org/api/modules.html#modules_cycles
+        /* eslint-disable global-require */
+        const JobFactory = require('./jobFactory');
+        /* eslint-enable global-require */
+
+        const jobFactory = JobFactory.getInstance();
+
+        return this.admin
+            .then(user => user.unsealToken())
+            .then(token => this.scm.getPrInfo({
+                scmUri: this.scmUri,
+                token,
+                prNum
+            }))
+            .then(prInfo => Promise.all([
+                this.getConfiguration(prInfo.ref),
+                jobFactory.get({ pipelineId: this.id, name: `PR-${prNum}` })
+            ]))
+            .then(([parsedConfig, job]) => {
+                job.permutations = parsedConfig.jobs.main;
+
+                return job.update();
+            })
+            .then(() => this);
+    }
+
     /**
      * Sync the pipeline by looking up screwdriver.yaml
      * Create, update, or disable jobs if necessary.
diff --git a/package.json b/package.json
index f9f2d77a..e20496f2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "screwdriver-models",
-  "version": "21.2.0",
+  "version": "22.0.0",
   "description": "Screwdriver models",
   "main": "index.js",
   "scripts": {
diff --git a/test/lib/pipeline.test.js b/test/lib/pipeline.test.js
index 4c02dc1f..1145c7f0 100644
--- a/test/lib/pipeline.test.js
+++ b/test/lib/pipeline.test.js
@@ -98,7 +98,8 @@ describe('Pipeline Model', () => {
         };
         jobFactoryMock = {
             create: sinon.stub(),
-            list: sinon.stub()
+            list: sinon.stub(),
+            get: sinon.stub()
         };
         eventFactoryMock = {
             list: sinon.stub()
@@ -115,7 +116,8 @@ describe('Pipeline Model', () => {
             addWebhook: sinon.stub(),
             getFile: sinon.stub(),
             decorateUrl: sinon.stub(),
-            getOpenedPRs: sinon.stub()
+            getOpenedPRs: sinon.stub(),
+            getPrInfo: sinon.stub()
         };
         parserMock = sinon.stub();
 
@@ -372,6 +374,62 @@ describe('Pipeline Model', () => {
         });
     });
 
+    describe('syncPR', () => {
+        let prJob;
+
+        beforeEach(() => {
+            datastore.update.resolves(null);
+            scmMock.getFile.resolves('superyamlcontent');
+            scmMock.getPrInfo.resolves({ ref: 'pulls/1/merge' });
+            parserMock.withArgs('superyamlcontent', templateFactoryMock).resolves(PARSED_YAML);
+            userFactoryMock.get.withArgs({ username: 'batman' }).resolves({
+                unsealToken: sinon.stub().resolves('foo')
+            });
+            prJob = {
+                update: sinon.stub().resolves(null),
+                isPR: sinon.stub().returns(true),
+                name: 'PR-1',
+                state: 'ENABLED',
+                archived: false
+            };
+        });
+
+        it('update PR config', () => {
+            jobFactoryMock.get.resolves(prJob);
+
+            return pipeline.syncPR(1).then(() => {
+                assert.calledWith(scmMock.getFile, {
+                    path: 'screwdriver.yaml',
+                    ref: 'pulls/1/merge',
+                    scmUri: 'github.com:12345:master',
+                    token: 'foo'
+                });
+                assert.called(prJob.update);
+                assert.deepEqual(prJob.permutations, PARSED_YAML.jobs.main);
+            });
+        });
+
+        it('returns error if fails to get configuration', () => {
+            const error = new Error('fails to get config');
+
+            scmMock.getFile.rejects(error);
+
+            return pipeline.syncPR(1).catch((err) => {
+                assert.deepEqual(err, error);
+            });
+        });
+
+        it('returns error if fails to get PR job', () => {
+            const error = new Error('fails to get job');
+
+            jobFactoryMock.get.rejects(error);
+
+            return pipeline.syncPR(1).catch((err) => {
+                assert.deepEqual(err, error);
+            });
+        });
+    });
+
     describe('syncPRs', () => {
         let prJob;