remove all git tag except...

this will delete all other git tags except the 4.1 tag.

git tag | grep -v "4.1" | xargs -n 1 -i% git tag -d %

if you want to also delete the remote tag:

git tag | xargs -n 1 -i% git push origin :refs/tags/%

attribution:

• https://gist.github.com/shsteimer/7257245

...

hope this helps.