diff --git a/third_party/copybara/copy.bara.sky b/third_party/copybara/copy.bara.sky
index 2d543e2496..4a34d64d6c 100644
--- a/third_party/copybara/copy.bara.sky
+++ b/third_party/copybara/copy.bara.sky
@@ -22,6 +22,7 @@ core.workflow(
             "patches/0001-Make-Mercurial-at-least-slightly-usable.patch",
             "patches/0002-HgRepository-HGPLAIN.patch",
             "patches/0003-HgDestination-nonpublishing.patch",
+            "patches/diff-support-T.patch",
         ]),
         core.move("", "third_party/copybara"),
     ],
diff --git a/third_party/copybara/java/com/google/copybara/hg/HgDestination.java b/third_party/copybara/java/com/google/copybara/hg/HgDestination.java
index 41ca1c83b3..86f190cebb 100644
--- a/third_party/copybara/java/com/google/copybara/hg/HgDestination.java
+++ b/third_party/copybara/java/com/google/copybara/hg/HgDestination.java
@@ -237,22 +237,30 @@ public class HgDestination implements Destination<HgRevision> {
 
           Operation diffOp = diff.getOperation();
 
-          if (diffOp.equals(Operation.ADD)) {
-            Path targetPath = localRepo.getHgDir().getParent().resolve(diff.getName());
-            Files.createDirectories(targetPath.getParent());
-            Files.copy(workDir.resolve(diff.getName()),
-                targetPath, StandardCopyOption.COPY_ATTRIBUTES, StandardCopyOption.REPLACE_EXISTING);
-          }
+          switch (diffOp) {
+            case ADD:
+              Path targetPath = localRepo.getHgDir().getParent().resolve(diff.getName());
+              Files.createDirectories(targetPath.getParent());
+              Files.copy(
+                  workDir.resolve(diff.getName()),
+                  targetPath,
+                  StandardCopyOption.COPY_ATTRIBUTES,
+                  StandardCopyOption.REPLACE_EXISTING);
+              break;
 
-          if (diffOp.equals(Operation.MODIFIED)) {
-            Files.copy(workDir.resolve(diff.getName()),
-                localRepo.getHgDir().getParent().resolve(diff.getName()), StandardCopyOption.REPLACE_EXISTING);
-          }
+            case MODIFIED:
+            case TYPE_CHANGED:
+              Files.copy(
+                  workDir.resolve(diff.getName()),
+                  localRepo.getHgDir().getParent().resolve(diff.getName()),
+                  StandardCopyOption.REPLACE_EXISTING);
+              break;
 
-          if (diffOp.equals(Operation.DELETE)) {
-            if (!diff.getName().equals(".hg_archival.txt")) {
-              Files.delete(localRepo.getHgDir().getParent().resolve(diff.getName()));
-            }
+            case DELETE:
+              if (!diff.getName().equals(".hg_archival.txt")) {
+                Files.delete(localRepo.getHgDir().getParent().resolve(diff.getName()));
+              }
+              break;
           }
         }
       } catch (InsideGitDirException e) {
@@ -280,8 +288,10 @@ public class HgDestination implements Destination<HgRevision> {
       localRepo.cleanUpdate(remoteFetch);
 
       // Set the default path of the local repo to be the remote repo, so we can push to it
-      Files.write(localRepo.getHgDir().getParent().resolve(".hg/hgrc"),
-          String.format("[paths]\ndefault = %s\n\n[phases]\npublish = False\n", repoUrl).getBytes(StandardCharsets.UTF_8));
+      Files.write(
+          localRepo.getHgDir().getParent().resolve(".hg/hgrc"),
+          String.format("[paths]\ndefault = %s\n\n[phases]\npublish = False\n", repoUrl)
+              .getBytes(StandardCharsets.UTF_8));
 
       console.progress("Hg Destination: Computing diff");
       getDiffAndStageChanges(destinationFiles, workdir, localRepo);
diff --git a/third_party/copybara/java/com/google/copybara/util/DiffUtil.java b/third_party/copybara/java/com/google/copybara/util/DiffUtil.java
index a3bcb29eae..acfb69b162 100644
--- a/third_party/copybara/java/com/google/copybara/util/DiffUtil.java
+++ b/third_party/copybara/java/com/google/copybara/util/DiffUtil.java
@@ -119,7 +119,8 @@ public class DiffUtil {
     public enum Operation {
       ADD("A"),
       DELETE("D"),
-      MODIFIED("M");
+      MODIFIED("M"),
+      TYPE_CHANGED("T");
 
       private final String charType;
 
diff --git a/third_party/copybara/patches/diff-support-T.patch b/third_party/copybara/patches/diff-support-T.patch
new file mode 100644
index 0000000000..4932033970
--- /dev/null
+++ b/third_party/copybara/patches/diff-support-T.patch
@@ -0,0 +1,74 @@
+diff --git a/java/com/google/copybara/hg/HgDestination.java b/java/com/google/copybara/hg/HgDestination.java
+--- a/java/com/google/copybara/hg/HgDestination.java
++++ b/java/com/google/copybara/hg/HgDestination.java
+@@ -237,22 +237,30 @@ public class HgDestination implements De
+ 
+           Operation diffOp = diff.getOperation();
+ 
+-          if (diffOp.equals(Operation.ADD)) {
+-            Path targetPath = localRepo.getHgDir().getParent().resolve(diff.getName());
+-            Files.createDirectories(targetPath.getParent());
+-            Files.copy(workDir.resolve(diff.getName()),
+-                targetPath, StandardCopyOption.COPY_ATTRIBUTES, StandardCopyOption.REPLACE_EXISTING);
+-          }
++          switch (diffOp) {
++            case ADD:
++              Path targetPath = localRepo.getHgDir().getParent().resolve(diff.getName());
++              Files.createDirectories(targetPath.getParent());
++              Files.copy(
++                  workDir.resolve(diff.getName()),
++                  targetPath,
++                  StandardCopyOption.COPY_ATTRIBUTES,
++                  StandardCopyOption.REPLACE_EXISTING);
++              break;
+ 
+-          if (diffOp.equals(Operation.MODIFIED)) {
+-            Files.copy(workDir.resolve(diff.getName()),
+-                localRepo.getHgDir().getParent().resolve(diff.getName()), StandardCopyOption.REPLACE_EXISTING);
+-          }
++            case MODIFIED:
++            case TYPE_CHANGED:
++              Files.copy(
++                  workDir.resolve(diff.getName()),
++                  localRepo.getHgDir().getParent().resolve(diff.getName()),
++                  StandardCopyOption.REPLACE_EXISTING);
++              break;
+ 
+-          if (diffOp.equals(Operation.DELETE)) {
+-            if (!diff.getName().equals(".hg_archival.txt")) {
+-              Files.delete(localRepo.getHgDir().getParent().resolve(diff.getName()));
+-            }
++            case DELETE:
++              if (!diff.getName().equals(".hg_archival.txt")) {
++                Files.delete(localRepo.getHgDir().getParent().resolve(diff.getName()));
++              }
++              break;
+           }
+         }
+       } catch (InsideGitDirException e) {
+@@ -280,8 +288,10 @@ public class HgDestination implements De
+       localRepo.cleanUpdate(remoteFetch);
+ 
+       // Set the default path of the local repo to be the remote repo, so we can push to it
+-      Files.write(localRepo.getHgDir().getParent().resolve(".hg/hgrc"),
+-          String.format("[paths]\ndefault = %s\n\n[phases]\npublish = False\n", repoUrl).getBytes(StandardCharsets.UTF_8));
++      Files.write(
++          localRepo.getHgDir().getParent().resolve(".hg/hgrc"),
++          String.format("[paths]\ndefault = %s\n\n[phases]\npublish = False\n", repoUrl)
++              .getBytes(StandardCharsets.UTF_8));
+ 
+       console.progress("Hg Destination: Computing diff");
+       getDiffAndStageChanges(destinationFiles, workdir, localRepo);
+diff --git a/java/com/google/copybara/util/DiffUtil.java b/java/com/google/copybara/util/DiffUtil.java
+--- a/java/com/google/copybara/util/DiffUtil.java
++++ b/java/com/google/copybara/util/DiffUtil.java
+@@ -119,7 +119,8 @@ public class DiffUtil {
+     public enum Operation {
+       ADD("A"),
+       DELETE("D"),
+-      MODIFIED("M");
++      MODIFIED("M"),
++      TYPE_CHANGED("T");
+ 
+       private final String charType;
+