diff --git a/install-hooks/git/post-install b/install-hooks/git/post-install
index 64d7a1e..5e943d3 100755
--- a/install-hooks/git/post-install
+++ b/install-hooks/git/post-install
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
 git config --global user.name "$USER"
-git config --global user.email "${USER}@${HOST}"
+git config --global user.email "${USER}@${HOST:-$HOSTNAME}"
 git config --global user.signingkey "$USER"
+
+git config --global github.user "$USER"
+git config --global github.email "${USER}@${HOST:-$HOSTNAME}"