fix: ensure patches are different dependencies to enable unused

tests/testsuite/cargo_remove/gc_patch/mod.rs

@@ -23,6 +23,13 @@ fn case() {
     })
     .url();
 
+    let git_project3 = git::new("bar3", |project| {
+        project
+            .file("Cargo.toml", &basic_manifest("bar", "0.1.0"))
+            .file("src/lib.rs", "")
+    })
+    .url();
+
     let in_project = project()
         .file(
             "Cargo.toml",
@@ -38,7 +45,7 @@ fn case() {
                  bar = {{ git = \"{git_project1}\" }}\n\
                  \n\
                  [patch.\"{git_project1}\"]\n\
-                 bar = {{ git = \"{git_project2}\" }}\n\
+                 bar = {{ git = \"{git_project3}\" }}\n\
                  \n\
                  [patch.crates-io]\n\
                  bar = {{ git = \"{git_project2}\" }}\n",

tests/testsuite/cargo_remove/gc_patch/out/Cargo.lock

@@ -0,0 +1,19 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "bar"
+version = "0.1.0"
+source = "git+[..]"
+
+[[package]]
+name = "my-member"
+version = "0.1.0"
+dependencies = [
+ "bar",
+]
+
+[[package]]
+name = "my-project"
+version = "0.1.0"

tests/testsuite/cargo_remove/gc_patch/stderr.log

@@ -1,3 +1,3 @@
     Removing bar from dependencies
-    Updating git repository `[ROOTURL]/bar2`
+    Updating git repository `[ROOTURL]/bar[..]`
     Updating `dummy-registry` index