fix: prefer cli options over environment variables

Author: qoomon

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## 6.1.1
 ##### Fixes
 - do not consider project properties for command options anymore
+- prefer cli options e.g. `-Dgit.ref=...` over environment variables e.g. `VERSIONING_GIT_REF=...`)
 
 ## 6.1.0
 ##### Features

src/main/java/me/qoomon/gradle/gitversioning/GitVersioningPluginExtension.java

@@ -613,7 +613,7 @@ private void normalizeConfig(GitVersioningPluginConfig config) {
     }
 
     private String getCommandOption(final String name) {
-        String value = null;
+        String  value = System.getProperty(name);
         if (value == null) {
             String plainName = name.replaceFirst("^versioning\\.", "");
             String environmentVariableName = "VERSIONING_"
@@ -622,9 +622,6 @@ private String getCommandOption(final String name) {
                     .toUpperCase();
             value = System.getenv(environmentVariableName);
         }
-        if (value == null) {
-            value = System.getProperty(name);
-        }
         return value;
     }