diff --git a/forge.go b/forge.go
index 8b5b012..643c804 100644
--- a/forge.go
+++ b/forge.go
@@ -8,7 +8,6 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
-	"log"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -714,7 +713,7 @@ func syncForgeToModuleDir(name string, m ForgeModule, moduleDir string) {
 				Debugf("Nothing to do, existing Forge module: " + targetDir + " has the same version " + me.version + " as the to be synced version: " + m.version)
 				return
 			}
-			log.Println(funcName + "(): Need to sync, because existing Forge module: " + targetDir + " has version " + me.version + " and the to be synced version is: " + m.version)
+			Infof("Need to sync, because existing Forge module: " + targetDir + " has version " + me.version + " and the to be synced version is: " + m.version)
 			createOrPurgeDir(targetDir, " targetDir for module "+me.name)
 		} else {
 			Debugf("Need to purge " + targetDir + ", because it exists without a metadata.json. This shouldn't happen!")
diff --git a/g10k.go b/g10k.go
index cbf3478..92c8018 100644
--- a/g10k.go
+++ b/g10k.go
@@ -176,7 +176,7 @@ func main() {
 	version := *versionFlag
 
 	if version {
-		fmt.Println("g10k version 0.4.3 Build time:", buildtime, "UTC")
+		fmt.Println("g10k version 0.4.5 Build time:", buildtime, "UTC")
 		os.Exit(0)
 	}
 
diff --git a/g10k_test.go b/g10k_test.go
index 59dd23b..110158b 100644
--- a/g10k_test.go
+++ b/g10k_test.go
@@ -818,7 +818,7 @@ func TestResolvePuppetfileFallback(t *testing.T) {
 		t.Errorf("resolvePuppetEnvironment() terminated with the correct exit code, but the expected output was missing. out: %s", string(out))
 	}
 
-	if !strings.Contains(string(out), "executeCommand(): Executing git --git-dir /tmp/g10k/modules/https-__github.com_puppetlabs_puppetlabs-apt.git rev-parse --verify 'foooooobbaar'") {
+	if !strings.Contains(string(out), "executeCommand(): Executing git --git-dir /tmp/g10k/modules/https-__github.com_puppetlabs_puppetlabs-apt.git rev-parse --verify 'foooooobbaar^{object}'") {
 		t.Errorf("resolvePuppetEnvironment() terminated with the correct exit code, but the expected output was missing. out: %s", string(out))
 	}
 
@@ -871,7 +871,7 @@ func TestResolvePuppetfileDefaultBranch(t *testing.T) {
 		t.Errorf("resolvePuppetEnvironment() terminated with the correct exit code, but the expected output was missing. out: %s", string(out))
 	}
 
-	if !strings.Contains(string(out), "Executing git --git-dir /tmp/g10k/modules/https-__github.com_puppetlabs_puppetlabs-apache.git rev-parse --verify 'master' took") {
+	if !strings.Contains(string(out), "Executing git --git-dir /tmp/g10k/modules/https-__github.com_puppetlabs_puppetlabs-apache.git rev-parse --verify 'master^{object}' took") {
 		t.Errorf("resolvePuppetEnvironment() terminated with the correct exit code, but the expected output was missing. out: %s", string(out))
 	}
 
@@ -924,7 +924,7 @@ func TestResolvePuppetfileControlBranch(t *testing.T) {
 		t.Errorf("resolvePuppetEnvironment() terminated with the correct exit code, but the expected output was missing. out: %s", string(out))
 	}
 
-	if !strings.Contains(string(out), "Executing git --git-dir /tmp/g10k/modules/https-__github.com_puppetlabs_puppetlabs-apache.git rev-parse --verify 'master' took") {
+	if !strings.Contains(string(out), "Executing git --git-dir /tmp/g10k/modules/https-__github.com_puppetlabs_puppetlabs-apache.git rev-parse --verify 'master^{object}' took") {
 		t.Errorf("resolvePuppetEnvironment() terminated with the correct exit code, but the expected output was missing. out: %s", string(out))
 	}
 
@@ -1037,3 +1037,37 @@ func TestResolvePuppetfileLocalModules(t *testing.T) {
 	debug = false
 
 }
+
+func TestResolvePuppetfileInvalidGitObject(t *testing.T) {
+	quiet = true
+	funcName := strings.Split(funcName(), ".")[len(strings.Split(funcName(), "."))-1]
+	config = readConfigfile("tests/TestConfigPrefix.yaml")
+	if os.Getenv("TEST_FOR_CRASH_"+funcName) == "1" {
+		debug = true
+		resolvePuppetEnvironment("invalid_git_object")
+		return
+	}
+
+	cmd := exec.Command(os.Args[0], "-test.run="+funcName+"$")
+	cmd.Env = append(os.Environ(), "TEST_FOR_CRASH_"+funcName+"=1")
+	out, err := cmd.CombinedOutput()
+
+	exitCode := 0
+	if msg, ok := err.(*exec.ExitError); ok { // there is error code
+		exitCode = msg.Sys().(syscall.WaitStatus).ExitStatus()
+	}
+
+	//fmt.Println(string(out))
+	if 1 != exitCode {
+		t.Errorf("resolvePuppetEnvironment() terminated with %v, but we expected exit status %v Output: %s", exitCode, 1, string(out))
+	}
+
+	expectingString := "executeCommand(): git command failed: git --git-dir /tmp/g10k/modules/https-__github.com_puppetlabs_puppetlabs-firewall.git rev-parse --verify '0000000000000000000000000000000000000000^{object}' exit status 128"
+	if !strings.Contains(string(out), expectingString) {
+		t.Errorf("resolvePuppetEnvironment() terminated with the correct exit code, but the expected output was missing. out: %s\nExpecting string: %s", string(out), expectingString)
+	}
+
+	moduleParam = ""
+	debug = false
+
+}
diff --git a/git.go b/git.go
index 9cfe789..b070bfc 100644
--- a/git.go
+++ b/git.go
@@ -133,7 +133,7 @@ func syncToModuleDir(srcDir string, targetDir string, tree string, allowFail boo
 			Fatalf("Could not find cached git module " + srcDir)
 		}
 	}
-	logCmd := "git --git-dir " + srcDir + " rev-parse --verify '" + tree + "'"
+	logCmd := "git --git-dir " + srcDir + " rev-parse --verify '" + tree + "^{object}'"
 	er := executeCommand(logCmd, config.Timeout, allowFail)
 	hashFile := targetDir + "/.latest_commit"
 	needToSync := true