Throw a KeyError, not RuntimeError

Don't die when running outside of a git checkout, just ignore ref:
keyring locations.

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/patatt/__init__.py b/patatt/__init__.py
index e54bb10..2f380e0 100644
--- a/patatt/__init__.py
+++ b/patatt/__init__.py
@@ -684,7 +684,7 @@ def get_public_key(source: str, keytype: str, identity: str, selector: str) -> T
     if source.find('ref:') == 0:
         gittop = get_git_toplevel()
         if not gittop:
-            raise RuntimeError('Not in a git tree, so cannot use a ref: source')
+            raise KeyError('Not in a git tree, so cannot use a ref: source')
         # format is: ref:refspec:path
         # or it could omit the refspec, meaning "whatever the current ref"
         # but it should always have at least two ":"