diff --git a/Bugfix-format-problem.patch b/Bugfix-format-problem.patch
new file mode 100644
index 0000000..b7736ee
--- /dev/null
+++ b/Bugfix-format-problem.patch
@@ -0,0 +1,12 @@
+diff -urNp a/dnf/base.py b/dnf/base.py
+--- a/dnf/base.py	2019-11-05 17:26:35.000000000 +0800
++++ b/dnf/base.py	2020-01-17 09:10:06.178837683 +0800
+@@ -442,7 +442,7 @@ class Base(object):
+             logger.info(_("The downloaded packages were saved in cache "
+                           "until the next successful transaction."))
+             logger.info(_("You can remove cached packages by executing "
+-                          "'%s'."), "{prog} clean packages").format(prog=dnf.util.MAIN_PROG)
++                          "'%s'."), "{prog} clean packages".format(prog=dnf.util.MAIN_PROG))
+ 
+         # Do not trigger the lazy creation:
+         if self._history is not None:
diff --git a/dnf.spec b/dnf.spec
index ba8faa1..43766dc 100644
--- a/dnf.spec
+++ b/dnf.spec
@@ -11,11 +11,14 @@
 
 Name:                 dnf
 Version:              4.2.15
-Release:              2
+Release:              3
 Summary:              A software package manager that manages packages on Linux distributions.
 License:              GPLv2+ and GPLv2 and GPL
 URL:                  https://github.com/rpm-software-management/dnf
 Source0:              https://github.com/rpm-software-management/dnf/archive/%{version}/%{name}-%{version}.tar.gz
+
+Patch9000:            Bugfix-format-problem.patch
+
 BuildArch:            noarch
 BuildRequires:        cmake gettext systemd bash-completion %{_bindir}/sphinx-build-3 %{_bindir}/sphinx-build
 Requires:             python3-%{name} = %{version}-%{release} libreport-filesystem python2-%{name} = %{version}-%{release} 
@@ -246,5 +249,8 @@ ln -sr  %{buildroot}%{_sysconfdir}/%{name}/vars %{buildroot}%{_sysconfdir}/yum/v
 %{_mandir}/man8/%{name}-automatic.8*
 
 %changelog
+* Fri Jan 17 2020 openEuler Buildteam <buildteam@openeuler.org> - 4.2.15-3
+- bug fix format problem
+
 * Mon Jan 6 2020 openEuler Buildteam <buildteam@openeuler.org> - 4.2.15-2
 - Package Init