Unable to clone repository on Windows due to invalid folder name - "/solutions*"

[ibombonato]

When trying to clone on Windows I receive the following error:

$ git clone https://github.com/rstudio/ShinyDeveloperConference.git
Cloning into 'ShinyDeveloperConference'...
remote: Counting objects: 411, done.
remote: Total 411 (delta 0), reused 0 (delta 0), pack-reused 411
Receiving objects: 100% (411/411), 16.25 MiB | 973.00 KiB/s, done.
Resolving deltas: 100% (43/43), done.
Checking connectivity... done.
fatal: cannot create directory at 'Modules/Exercise-1/solution': Invalid argument*
warning: Clone succeeded, but checkout failed.
You can inspect what was checked out with 'git status'
and retry the checkout with 'git checkout -f HEAD'

We can't have folder names with * on it.