git fetch overwriting local tags

Hello,

John and I wondered about git fetch overwriting local tags. I was sure enough to claim that git fetch won't overwrite local tags with remote tags having the same name. But after John pointed me to

	http://www.pythian.com/news/9067/on-the-perils-of-importing-remote-tags-in-git/

I tested that (using Debian's 1.7.7.3) and really, git does overwrite local tags.

Here is my test script:

	mkdir a
	cd a
	echo some content > some_file
	git init 
	git add some_file
	git commit -m 'some commit log'
	git tag some_tag

	cd ..

	mkdir b
	cd b
	echo some different content > another_file
	git init 
	git add another_file
	git commit -m 'another commit log'
	git tag some_tag

	git fetch --tags ../a

After that I have:

	git log -1 --oneline some_tag
	c4ad89a some commit log

so b's tag was overwritten.

Is this intended?

Best regards Uwe