diff --git a/src/plugins/git/changeselectiondialog.cpp b/src/plugins/git/changeselectiondialog.cpp
index 847b08759d0..b56ee47916a 100644
--- a/src/plugins/git/changeselectiondialog.cpp
+++ b/src/plugins/git/changeselectiondialog.cpp
@@ -156,13 +156,13 @@ void ChangeSelectionDialog::acceptCommand(ChangeCommand command)
 }
 
 //! Set commit message in details
-void ChangeSelectionDialog::setDetails(int exitCode)
+void ChangeSelectionDialog::setDetails()
 {
     Theme *theme = creatorTheme();
 
     QPalette palette;
-    if (exitCode == 0) {
-        m_ui->detailsText->setPlainText(QString::fromUtf8(m_process->readAllStandardOutput()));
+    if (m_process->result() == QtcProcess::FinishedWithSuccess) {
+        m_ui->detailsText->setPlainText(m_process->stdOut());
         palette.setColor(QPalette::Text, theme->color(Theme::TextColorNormal));
         m_ui->changeNumberEdit->setPalette(palette);
     } else {
@@ -228,15 +228,14 @@ void ChangeSelectionDialog::recalculateDetails()
         return;
     }
 
-    m_process = new QProcess(this);
-    m_process->setWorkingDirectory(workingDir.toString());
-    m_process->setProcessEnvironment(m_gitEnvironment.toProcessEnvironment());
+    m_process = new QtcProcess(this);
+    m_process->setWorkingDirectory(workingDir);
+    m_process->setEnvironment(m_gitEnvironment);
+    m_process->setCommand({m_gitExecutable, {"show", "--decorate", "--stat=80", ref}});
 
-    connect(m_process, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished),
-            this, &ChangeSelectionDialog::setDetails);
+    connect(m_process, &QtcProcess::finished, this, &ChangeSelectionDialog::setDetails);
 
-    m_process->start(m_gitExecutable.toString(), {"show", "--decorate", "--stat=80", ref});
-    m_process->closeWriteChannel();
+    m_process->start();
     if (!m_process->waitForStarted())
         m_ui->detailsText->setPlainText(tr("Error: Could not start Git."));
     else
diff --git a/src/plugins/git/changeselectiondialog.h b/src/plugins/git/changeselectiondialog.h
index edaaf61c630..45e9cb43fa0 100644
--- a/src/plugins/git/changeselectiondialog.h
+++ b/src/plugins/git/changeselectiondialog.h
@@ -32,10 +32,11 @@
 #include <QDialog>
 
 QT_BEGIN_NAMESPACE
-class QProcess;
 class QStringListModel;
 QT_END_NAMESPACE
 
+namespace Utils { class QtcProcess; }
+
 namespace Git {
 namespace Internal {
 
@@ -64,7 +65,7 @@ public:
 
 private:
     void selectCommitFromRecentHistory();
-    void setDetails(int exitCode);
+    void setDetails();
     void recalculateCompletion();
     void recalculateDetails();
     void changeTextChanged(const QString &text);
@@ -75,7 +76,7 @@ private:
 
     Ui::ChangeSelectionDialog *m_ui;
 
-    QProcess *m_process = nullptr;
+    Utils::QtcProcess *m_process = nullptr;
     Utils::FilePath m_gitExecutable;
     Utils::Environment m_gitEnvironment;
     ChangeCommand m_command = NoCommand;