Merge branch 'pks-non-mandatory-git-2.28.0' into 'master'

Drop minimum required Git version to v2.24.0 again

See merge request gitlab-org/gitlab!39185

doc/install/installation.md

@@ -134,7 +134,7 @@ Make sure you have the right version of Git installed:
 # Install Git
 sudo apt-get install -y git-core
 
-# Make sure Git is version 2.28.0 or higher
+# Make sure Git is version 2.24.0 or higher (recommended version is 2.28.0)
 git --version
 ```
 

doc/install/requirements.md

@@ -56,7 +56,8 @@ The minimum required Go version is 1.13.
 
 From GitLab 13.1:
 
-- Git 2.28.x and later [is required](https://gitlab.com/gitlab-org/gitaly/-/issues/2959).
+- Git 2.24.x and later is required.
+- Git 2.28.x and later [is recommended](https://gitlab.com/gitlab-org/gitaly/-/issues/2959).
 
 ### Node.js versions
 

doc/update/README.md

@@ -224,8 +224,8 @@ possible.
 
 ### 13.3.0
 
-In 13.3.0, you must upgrade to at least Git v2.28. Previously, the minimum
-required version was Git v2.24.
+The recommended Git version is Git v2.28. The minimum required version of Git
+v2.24 remains the same.
 
 ### 13.2.0
 

doc/update/upgrading_from_source.md

@@ -124,7 +124,7 @@ rm go1.13.5.linux-amd64.tar.gz
 
 CAUTION: **Caution:**
 From GitLab 13.1, you must use at least Git v2.24 (previous minimum version was v2.22).
-From GitLab 13.3, you must use at least Git v2.28.
+Git v2.28 is recommended.
 
 To check you are running the minimum required Git version, see
 [Git versions](../install/requirements.md#git-versions).
@@ -132,7 +132,7 @@ To check you are running the minimum required Git version, see
 In Debian or Ubuntu:
 
 ```shell
-# Make sure Git is version 2.28.0 or higher
+# Make sure Git is version 2.24.0 or higher
 git --version
 
 # Remove packaged Git

lib/system_check/app/git_version_check.rb

@@ -7,7 +7,7 @@ module SystemCheck
       set_check_pass -> { "yes (#{self.current_version})" }
 
       def self.required_version
-        @required_version ||= Gitlab::VersionInfo.parse('2.28.0')
+        @required_version ||= Gitlab::VersionInfo.parse('2.24.0')
       end
 
       def self.current_version