add ability to set git versions on the command line

lib/omnibus/cli/base.rb

@@ -43,6 +43,11 @@ def initialize(args, options, config)
         Omnibus.logger.level = @options[:log_level]
       end
 
+      # If there are any version changes then go ahead and update them
+      @options[:version].each do |key, value|
+        Config.version_override[key] = value
+      end
+
       # Do not load the Omnibus config if we are asking for help or the version
       if %w(help version).include?(config[:current_command].name)
         log.debug { 'Skipping Omnibus loading (detected help or version)' }
@@ -99,6 +104,10 @@ def initialize(args, options, config)
       aliases: '-o',
       type: :hash,
       default: {}
+    class_option :version,
+      desc: 'Override the project version send project:version',
+      aliases: '-v',
+      type: :hash
 
     #
     # Hide the default help task to encourage people to use +-h+ instead of

lib/omnibus/config.rb

@@ -290,6 +290,13 @@ class Config
     #   @return [Array]
     default :ldd_whitelist_override, []
 
+    # @!attribute [rw] version_override
+    #   manually override the project version on the command line
+    #
+    #   @return [Hash]
+    default :version_override, {}
+
+
     # # @!endgroup
 
     # @!group Build Control Parameters

lib/omnibus/fetchers/git_fetcher.rb

@@ -24,7 +24,13 @@ class GitFetcher < Fetcher
     def initialize(software)
       @name         = software.name
       @source       = software.source
-      @version      = software.version
+
+      if Config.version_override.has_key? software
+        @version      = Config.version_override[software]
+      else
+        @version      = software.version
+      end
+
       @project_dir  = software.project_dir
       super
     end