If you prefer, you can clean your repository the hard way:
\verbatim
-git reset --hard master # warning, it will kill your uncommited changes
-git clean -dfx # warning, it will kill your uncommited changes
+git reset --hard master # remove all uncommited changes to the files tracked by git
+git clean -dfx # delete all files and directories that are not tracked by git
cmake . && make dist
\endverbatim
