diff --git a/src/plugins/git/gitclient.cpp b/src/plugins/git/gitclient.cpp
index 8121bf5dac2..467854c4866 100644
--- a/src/plugins/git/gitclient.cpp
+++ b/src/plugins/git/gitclient.cpp
@@ -3011,6 +3011,15 @@ QTextCodec *GitClient::encoding(const QString &workingDirectory, const QByteArra
     return QTextCodec::codecForName(codecName);
 }
 
+// returns first line from log and removes it
+static QByteArray shiftLogLine(QByteArray &logText)
+{
+    const int index = logText.indexOf('\n');
+    const QByteArray res = logText.left(index);
+    logText.remove(0, index + 1);
+    return res;
+}
+
 bool GitClient::getCommitData(const QString &workingDirectory,
                               QString *commitTemplate,
                               CommitData &commitData,
@@ -3097,19 +3106,20 @@ bool GitClient::getCommitData(const QString &workingDirectory,
     case AmendCommit: {
         // Amend: get last commit data as "SHA1<tab>author<tab>email<tab>message".
         QStringList args(QLatin1String("log"));
-        args << QLatin1String("--max-count=1") << QLatin1String("--pretty=format:%h\t%an\t%ae\t%B");
-        const Utils::SynchronousProcessResponse sp = synchronousGit(repoDirectory, args, 0,
-                                                                    commitData.commitEncoding);
-        if (sp.result != Utils::SynchronousProcessResponse::Finished) {
+        args << QLatin1String("--max-count=1") << QLatin1String("--pretty=format:%h\n%an\n%ae\n%B");
+        QByteArray outputText;
+        if (!fullySynchronousGit(repoDirectory, args, &outputText, 0,
+                                 VcsBasePlugin::SuppressCommandLogging)) {
             *errorMessage = tr("Cannot retrieve last commit data of repository \"%1\".").arg(repoDirectory);
             return false;
         }
-        QStringList values = sp.stdOut.split(QLatin1Char('\t'));
-        QTC_ASSERT(values.size() >= 4, return false);
-        commitData.amendSHA1 = values.takeFirst();
-        commitData.panelData.author = values.takeFirst();
-        commitData.panelData.email = values.takeFirst();
-        *commitTemplate = values.join(QLatin1String("\t"));
+        QTextCodec *authorCodec = Utils::HostOsInfo::isWindowsHost()
+                ? QTextCodec::codecForName("UTF-8")
+                : commitData.commitEncoding;
+        commitData.amendSHA1 = QString::fromLatin1(shiftLogLine(outputText));
+        commitData.panelData.author = authorCodec->toUnicode(shiftLogLine(outputText));
+        commitData.panelData.email = authorCodec->toUnicode(shiftLogLine(outputText));
+        *commitTemplate = commitData.commitEncoding->toUnicode(outputText);
         break;
     }
     case SimpleCommit: {