diff --git a/plugins/git-auto-fetch/git-auto-fetch.plugin.zsh b/plugins/git-auto-fetch/git-auto-fetch.plugin.zsh
index 0da84f2f5..dbc949621 100644
--- a/plugins/git-auto-fetch/git-auto-fetch.plugin.zsh
+++ b/plugins/git-auto-fetch/git-auto-fetch.plugin.zsh
@@ -11,8 +11,9 @@ function git-fetch-all {
       return 0
     fi
 
-    # Do nothing if auto-fetch disabled
-    if [[ -z "$gitdir" || -f "$gitdir/NO_AUTO_FETCH" ]]; then
+    # Do nothing if auto-fetch is disabled or don't have permissions
+    if [[ ! -w "$gitdir" || -f "$gitdir/NO_AUTO_FETCH" ]] ||
+       [[ -f "$gitdir/FETCH_LOG" && ! -w "$gitdir/FETCH_LOG" ]]; then
       return 0
     fi