Index: fish/functions/fish_prompt.fish
==================================================================
--- fish/functions/fish_prompt.fish
+++ fish/functions/fish_prompt.fish
@@ -5,15 +5,15 @@
             set suffix (set_color $fish_color_cwd_root)'#'
         case '*'
             set suffix '>'
     end
 
-    set -l branch (git symbolic-ref HEAD 2>/dev/null)
-    set branch (string replace -r "^refs/heads/" "" $branch)
+    set -l branch (fossil branch current 2>/dev/null)
     
     if test -z "$branch"
-        set branch (fossil branch current 2>/dev/null)
+        set branch (git symbolic-ref HEAD 2>/dev/null)
+        set branch (string replace -r "^refs/heads/" "" $branch)
     end
 
     set -l vcs
     if test -n "$branch"
         set vcs (set_color $fish_color_vcs_braces)"(" \

Index: zshrc
==================================================================
--- zshrc
+++ zshrc
@@ -101,15 +101,15 @@
 set_prompt
 
 __precmd() {
 	__update_terminal_cwd
 
-	local branch=$(git symbolic-ref HEAD 2>/dev/null)
-	branch=${branch##refs/heads/}
+	local branch=$(fossil branch current 2>/dev/null)
 
 	if [ -z "$branch" ]; then
-		branch=$(fossil branch current 2>/dev/null)
+		branch=$(git symbolic-ref HEAD 2>/dev/null)
+		branch=${branch##refs/heads/}
 	fi
 
 	set_prompt $branch
 }