If a Git repository hosted on Bitbucket contains files/paths that use international characters such as "ä" and "ö", the corresponding file names are corrupted (e.g. "ö" gets replaced with "├╢") in a ZIP package download of the repository that Bitbucket provides.

I've created a public repository in Bitbucket that should show you the problem:

https://bitbucket.org/fo/test