diff --git a/cmd/main.go b/cmd/main.go
index c691777..a2b9271 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -60,8 +60,8 @@ func main() {
 
 type pubSubHTTPMessage struct {
 	Message struct {
-		Data []byte `json:"data,omitempty"`
-		Attributes  map[string]string `json:"attributes,omitempty"`
+		Data       []byte            `json:"data,omitempty"`
+		Attributes map[string]string `json:"attributes,omitempty"`
 	} `json:"message"`
 	Subscription string `json:"subscription"`
 }
@@ -80,9 +80,9 @@ func httpHandler(n cloudbuildnotifier.Notifier, c *cloudbuild.CloudbuildClient)
 		}
 
 		m := &pubsub.Message{
-			ID:   pubsubHttp.Message.Attributes["buildId"],
+			ID:         pubsubHttp.Message.Attributes["buildId"],
 			Attributes: pubsubHttp.Message.Attributes,
-			Data: pubsubHttp.Message.Data,
+			Data:       pubsubHttp.Message.Data,
 		}
 
 		if err := handleMessage(m, n, c); err != nil {
@@ -108,7 +108,7 @@ func handleMessage(msg *pubsub.Message, notifier cloudbuildnotifier.Notifier, cl
 		return fmt.Errorf("failed unmarshaling json from cloudbuild response: %s", err)
 	}
 
-	buildParams, err := cloudbuild.GetBuildParameterss(msg.Attributes["buildId"])
+	buildParams, err := cloudbuild.GetBuildParameters(msg.Attributes["buildId"])
 	if err != nil {
 		return fmt.Errorf("Failed getting build parameters from cloudbuild for build %s: %s",
 			msg.Attributes["buildId"], err)
diff --git a/pkg/cloudbuild/cloudbuild.go b/pkg/cloudbuild/cloudbuild.go
index 7a65d52..843afe7 100644
--- a/pkg/cloudbuild/cloudbuild.go
+++ b/pkg/cloudbuild/cloudbuild.go
@@ -4,7 +4,8 @@ import (
 	"context"
 	"fmt"
 	"github.com/fatih/structs"
-	cloudbuild "google.golang.org/api/cloudbuild/v1"
+	"google.golang.org/api/cloudbuild/v1"
+	"log"
 )
 
 type CloudbuildClient struct {
@@ -26,23 +27,27 @@ func New(projectId string) (*CloudbuildClient, error) {
 }
 
 type BuildParameters struct {
-	Id           string
-	REPO_NAME    string
-	BRANCH_NAME  string
-	COMMIT_SHA   string
-	REVISION_ID  string
-	TRIGGER_NAME string
+	Id            string
+	REPO_NAME     string
+	BRANCH_NAME   string
+	COMMIT_SHA    string
+	REVISION_ID   string
+	TRIGGER_NAME  string
+	HEAD_REPO_URL string
 }
 
-func (c *CloudbuildClient) GetBuildParameterss(buildId string) (BuildParameters, error) {
+func (c *CloudbuildClient) GetBuildParameters(buildId string) (BuildParameters, error) {
 	buildParams := &BuildParameters{
 		Id: buildId,
 	}
 	b := structs.New(buildParams)
 	result, err := c.client.Get(c.ProjectID, buildId).Do()
+	log.Println("source:", result.Source)
 	if err != nil {
+		log.Printf("error getting build parameters: %s\n", err)
 		return *buildParams, err
 	}
+
 	for k, v := range result.Substitutions {
 		if f, ok := b.FieldOk(k); ok {
 			f.Set(v)
diff --git a/pkg/notifier/slack/slack.go b/pkg/notifier/slack/slack.go
index 9561aa2..5796852 100644
--- a/pkg/notifier/slack/slack.go
+++ b/pkg/notifier/slack/slack.go
@@ -3,6 +3,9 @@ package slack
 import (
 	"fmt"
 	"log"
+	"net/url"
+	"path"
+	"strings"
 
 	cloudbuildnotifier "github.com/cloudkite-io/cloudbuild-notifier"
 	"github.com/cloudkite-io/cloudbuild-notifier/pkg/cloudbuild"
@@ -34,11 +37,16 @@ func (n notifier) Send(cloudbuildResponse cloudbuildnotifier.CloudbuildResponse,
 		return nil
 	}
 
+	commitShaURL, err := buildGitSourceURL(buildParams)
+	if err != nil {
+		return fmt.Errorf("failed posting to webhook %s: %s", n.webhookURL, err)
+	}
+
 	attachment := slack.Attachment{
 		Title: fmt.Sprintf("Cloudbuild: %s", cloudbuildResponse.Status),
 		Color: color,
 		Text: fmt.Sprintf("Repo: %s\nBranch: %s\nCommit SHA: %s\nTrigger: %s\n",
-			buildParams.REPO_NAME, buildParams.BRANCH_NAME, buildParams.COMMIT_SHA, buildParams.TRIGGER_NAME),
+			buildParams.REPO_NAME, buildParams.BRANCH_NAME, commitShaURL, buildParams.TRIGGER_NAME),
 		Actions: []slack.AttachmentAction{
 			{
 				Text: "View Logs",
@@ -52,7 +60,7 @@ func (n notifier) Send(cloudbuildResponse cloudbuildnotifier.CloudbuildResponse,
 		Attachments: []slack.Attachment{attachment},
 	}
 
-	err := slack.PostWebhook(n.webhookURL, &msg)
+	err = slack.PostWebhook(n.webhookURL, &msg)
 	if err != nil {
 		return fmt.Errorf("failed posting to webhook %s: %s", n.webhookURL, err)
 	}
@@ -62,6 +70,16 @@ func (n notifier) Send(cloudbuildResponse cloudbuildnotifier.CloudbuildResponse,
 	return nil
 }
 
+func buildGitSourceURL(buildParams cloudbuild.BuildParameters) (string, error) {
+	u, err := url.Parse(buildParams.HEAD_REPO_URL)
+	if err != nil {
+		return "", err
+	}
+	u.Path = strings.Trim(u.Path, ".git")
+	u.Path = path.Join(u.Path, "commit", buildParams.COMMIT_SHA)
+	return u.String(), nil
+}
+
 func stringInSlice(needle string, haystack []string) bool {
 	for _, b := range haystack {
 		if b == needle {