git fetch --depth=1 increases pack file even though there is no changes

[James Wiltshire]

Hi,

We recently upgraded to bitbucket data center 7.0.2 from 5.10 and have noticed an odd issue when using fetch via a scm in Jenkins

This is the git fetch command that is sent. 

git fetch --tags --force --progress --depth=1 -- ssh://git@company:7999/mob/repo.git +refs/heads/*:refs/remotes/origin/* # timeout=10

Even though the git polling log reports no change the .git repo still increases each time. 

Any ideas?