Author: Daniel Baumann <daniel.baumann@progress-linux.org>
Description: Using python3 in commit-msg hook (Closes: #891538).

diff -Naurp gitlint.orig/gitlint/files/commit-msg gitlint/gitlint/files/commit-msg
--- gitlint.orig/gitlint/files/commit-msg
+++ gitlint/gitlint/files/commit-msg
@@ -26,7 +26,7 @@ exit_code=$?
 # This is the case for Atlassian SourceTree, where $PATH deviates from the user's shell $PATH.
 if [ $exit_code -eq 127 ]; then
     echo "Fallback to python module execution"
-    python -m gitlint.cli --staged --msg-filename "$1" run-hook
+    python3 -m gitlint.cli --staged --msg-filename "$1" run-hook
     exit_code=$?
 fi