cmd/relocate: Fix windows regression

This commit fixes an error handling regression on `ggman relocate` that
was only triggered on windows.

README.md

@@ -422,7 +422,9 @@ ggman comes with the following builtin aliases:
 
 ## Changelog
 
-### 1.21.0 (Upcoming)
+### 1.20.1 (Upcoming)
+
+- fix `ggman relocate` behavior on Windows
 
 ### 1.20.0 (Released [Jun 1 2023](https://github.com/tkw1536/ggman/releases/tag/v1.20.0))
 

cmd/relocate.go

@@ -101,10 +101,14 @@ func (r relocate) Run(context ggman.Context) error {
 		{
 			err := os.Rename(gotPath, shouldPath)
 
-			// check fi something already exists
-			if errors.Is(err, fs.ErrExist) {
-				return errPathAlreadyExists.WithMessageF(shouldPath)
+			// check if an error was returned because the path already existed
+			// (fs.ErrPermission is returned by Windows)
+			if errors.Is(err, fs.ErrExist) || errors.Is(err, fs.ErrPermission) {
+				if exists, _ := fsx.Exists(shouldPath); exists {
+					return errPathAlreadyExists.WithMessageF(shouldPath)
+				}
 			}
+
 			if err != nil {
 				return errUnableToMoveRepo.WrapError(err)
 			}