diff --git a/git/client.go b/git/client.go
index 6db7a92f9..308491e1f 100644
--- a/git/client.go
+++ b/git/client.go
@@ -234,7 +234,12 @@ func isGitSha(s string) bool {
 }
 
 func (c *Client) Commits(ctx context.Context, baseRef, headRef string) ([]*Commit, error) {
-	args := []string{"-c", "log.ShowSignature=false", "log", "--pretty=format:%H,%s,%b", "--cherry", fmt.Sprintf("%s...%s", baseRef, headRef)}
+	// The formatting directive %x00 indicates that git should include the null byte as a separator.
+	// We use this because it is not a valid character to include in a commit message. Previously,
+	// commas were used here but when we Split on them, we would get incorrect results if commit titles
+	// happened to contain them.
+	// https://git-scm.com/docs/pretty-formats#Documentation/pretty-formats.txt-emx00em
+	args := []string{"-c", "log.ShowSignature=false", "log", "--pretty=format:%H%x00%s%x00%b", "--cherry", fmt.Sprintf("%s...%s", baseRef, headRef)}
 	cmd, err := c.Command(ctx, args...)
 	if err != nil {
 		return nil, err
@@ -249,7 +254,7 @@ func (c *Client) Commits(ctx context.Context, baseRef, headRef string) ([]*Commi
 	body := 2
 	lines := outputLines(out)
 	for i := 0; i < len(lines); i++ {
-		split := strings.SplitN(lines[i], ",", 3)
+		split := strings.SplitN(lines[i], "\u0000", 3)
 		if isGitSha(split[sha]) {
 			c := &Commit{
 				Sha:   split[sha],
@@ -264,7 +269,7 @@ func (c *Client) Commits(ctx context.Context, baseRef, headRef string) ([]*Commi
 					break
 				}
 
-				possibleSplit := strings.SplitN(lines[i], ",", 3)
+				possibleSplit := strings.SplitN(lines[i], "\u0000", 3)
 				if len(possibleSplit) > 2 && isGitSha(possibleSplit[sha]) {
 					i--
 					break
diff --git a/git/client_test.go b/git/client_test.go
index df44fac9d..a8ac173fe 100644
--- a/git/client_test.go
+++ b/git/client_test.go
@@ -493,7 +493,7 @@ func TestClientCommits(t *testing.T) {
 					},
 				},
 			},
-			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry SHA1...SHA2`,
+			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry SHA1...SHA2`,
 			wantCommits: []*Commit{{
 				Sha:   "6a6872b918c601a0e730710ad8473938a7516d30",
 				Title: "testing testability test",
@@ -510,7 +510,7 @@ func TestClientCommits(t *testing.T) {
 					},
 				},
 			},
-			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry SHA1...SHA2`,
+			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry SHA1...SHA2`,
 			wantCommits: []*Commit{{
 				Sha:   "6a6872b918c601a0e730710ad8473938a7516d30",
 				Title: "testing testability test",
@@ -533,7 +533,7 @@ func TestClientCommits(t *testing.T) {
 					},
 				},
 			},
-			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry SHA1...SHA2`,
+			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry SHA1...SHA2`,
 			wantCommits: []*Commit{
 				{
 					Sha:   "6a6872b918c601a0e730710ad8473938a7516d30",
@@ -562,7 +562,7 @@ func TestClientCommits(t *testing.T) {
 					},
 				},
 			},
-			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry SHA1...SHA2`,
+			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry SHA1...SHA2`,
 			wantCommits: []*Commit{
 				{
 					Sha:   "6a6872b918c601a0e730710ad8473938a7516d30",
@@ -591,7 +591,7 @@ func TestClientCommits(t *testing.T) {
 					},
 				},
 			},
-			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry SHA1...SHA2`,
+			wantCmdArgs: `path/to/git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry SHA1...SHA2`,
 			wantCommits: []*Commit{
 				{
 					Sha:   "6a6872b918c601a0e730710ad8473938a7516d30",
@@ -610,7 +610,7 @@ func TestClientCommits(t *testing.T) {
 			testData: stubbedCommitsCommandData{
 				Commits: []stubbedCommit{},
 			},
-			wantCmdArgs:  `path/to/git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry SHA1...SHA2`,
+			wantCmdArgs:  `path/to/git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry SHA1...SHA2`,
 			wantErrorMsg: "could not find any commits between SHA1 and SHA2",
 		},
 		{
@@ -619,7 +619,7 @@ func TestClientCommits(t *testing.T) {
 				ErrMsg:     "git error message",
 				ExitStatus: 1,
 			},
-			wantCmdArgs:  `path/to/git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry SHA1...SHA2`,
+			wantCmdArgs:  `path/to/git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry SHA1...SHA2`,
 			wantErrorMsg: "failed to run git: git error message",
 		},
 	}
@@ -656,9 +656,9 @@ func TestCommitsHelperProcess(t *testing.T) {
 		var sb strings.Builder
 		for _, commit := range td.Commits {
 			sb.WriteString(commit.Sha)
-			sb.WriteString(",")
+			sb.WriteString("\u0000")
 			sb.WriteString(commit.Title)
-			sb.WriteString(",")
+			sb.WriteString("\u0000")
 			sb.WriteString(commit.Body)
 			sb.WriteString("\n")
 		}
diff --git a/pkg/cmd/pr/create/create_test.go b/pkg/cmd/pr/create/create_test.go
index a8baa4883..c9906b7ec 100644
--- a/pkg/cmd/pr/create/create_test.go
+++ b/pkg/cmd/pr/create/create_test.go
@@ -627,7 +627,7 @@ func Test_createRun(t *testing.T) {
 					}))
 			},
 			cmdStubs: func(cs *run.CommandStubber) {
-				cs.Register(`git( .+)? log( .+)? origin/master\.\.\.feature`, 0, "d3476a1,commit 0\n7a6ea13,commit 1")
+				cs.Register(`git( .+)? log( .+)? origin/master\.\.\.feature`, 0, "d3476a1\u0000commit 0\u0000\n7a6ea13\u0000commit 1\u0000")
 			},
 			promptStubs: func(pm *prompter.PrompterMock) {
 				pm.MarkdownEditorFunc = func(p, d string, ba bool) (string, error) {
@@ -851,7 +851,7 @@ func Test_createRun(t *testing.T) {
 					}))
 			},
 			cmdStubs: func(cs *run.CommandStubber) {
-				cs.Register(`git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry origin/master...feature`, 0, "")
+				cs.Register(`git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry origin/master...feature`, 0, "")
 				cs.Register(`git rev-parse --show-toplevel`, 0, "")
 			},
 			promptStubs: func(pm *prompter.PrompterMock) {
@@ -1004,9 +1004,9 @@ func Test_createRun(t *testing.T) {
 			},
 			cmdStubs: func(cs *run.CommandStubber) {
 				cs.Register(
-					"git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry origin/master...feature",
+					"git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry origin/master...feature",
 					0,
-					"3a9b48085046d156c5acce8f3b3a0532cd706a4a,first commit of pr,first commit description\n",
+					"3a9b48085046d156c5acce8f3b3a0532cd706a4a\u0000first commit of pr\u0000first commit description\n",
 				)
 				cs.Register(`git rev-parse --show-toplevel`, 0, "")
 			},
@@ -1079,10 +1079,10 @@ func Test_createRun(t *testing.T) {
 			},
 			cmdStubs: func(cs *run.CommandStubber) {
 				cs.Register(
-					"git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry origin/master...feature",
+					"git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry origin/master...feature",
 					0,
-					"56b6f8bb7c9e3a30093cd17e48934ce354148e80,second commit of pr\n"+
-						"3a9b48085046d156c5acce8f3b3a0532cd706a4a,first commit of pr,first commit description\n",
+					"56b6f8bb7c9e3a30093cd17e48934ce354148e80\u0000second commit of pr\u0000\n"+
+						"3a9b48085046d156c5acce8f3b3a0532cd706a4a\u0000first commit of pr\u0000first commit description\n",
 				)
 			},
 			httpStubs: func(reg *httpmock.Registry, t *testing.T) {
@@ -1115,20 +1115,20 @@ func Test_createRun(t *testing.T) {
 			},
 			cmdStubs: func(cs *run.CommandStubber) {
 				cs.Register(
-					"git -c log.ShowSignature=false log --pretty=format:%H,%s,%b --cherry origin/master...feature",
+					"git -c log.ShowSignature=false log --pretty=format:%H%x00%s%x00%b --cherry origin/master...feature",
 					0,
-					"56b6f8bb7c9e3a30093cd17e48934ce354148e80,second commit of pr,second commit description\n"+
-						"3a9b48085046d156c5acce8f3b3a0532cd706a4a,first commit of pr,first commit with super long description, with super long description, with super long description, with super long description.\n",
+					"56b6f8bb7c9e3a30093cd17e48934ce354148e80\u0000second commit of pr\u0000second commit description\n"+
+						"3a9b48085046d156c5acce8f3b3a0532cd706a4a\u0000first commit of pr\u0000first commit with super long description, with super long description, with super long description, with super long description.\n",
 				)
 			},
 			httpStubs: func(reg *httpmock.Registry, t *testing.T) {
 				reg.Register(
 					httpmock.GraphQL(`mutation PullRequestCreate\b`),
 					httpmock.GraphQLMutation(`
-						{ 
+						{
 						"data": { "createPullRequest": { "pullRequest": {
 							"URL": "https://github.com/OWNER/REPO/pull/12"
-							} } } 
+							} } }
 						}
 						`,
 						func(input map[string]interface{}) {