scm {
	git {
		remote {
			url ('ssh://blabla')
		}
	}
}

set by defaut option "Create Tags for each build" to false (<skipTag>true</skipTag> in the build.xml)

scm {
	git ('ssh://blabla')
}

Activates the option by default (<skipTag>false</skipTag> in the build.xml)

Unless specified, i think the option shall be deactivated by default for all syntaxes.