diff --git a/src/main/java/eu/m724/blog/BlogBuilder.java b/src/main/java/eu/m724/blog/BlogBuilder.java
index 33fd76b..5f6cc3a 100644
--- a/src/main/java/eu/m724/blog/BlogBuilder.java
+++ b/src/main/java/eu/m724/blog/BlogBuilder.java
@@ -18,7 +18,6 @@ import java.nio.file.FileAlreadyExistsException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.*;
-import java.util.concurrent.ThreadLocalRandom;
 import java.util.stream.Collectors;
 
 /**
@@ -204,13 +203,8 @@ public class BlogBuilder {
         var fileHashes = new HashMap<String, String>();
 
         if (renderOptions.remapAssets()) {
-            var remapper = StaticCacheRemapper.fromGitRepository(workingDirectory);
-            if (remapper == null) {
-                LOGGER.warn("Site should be a Git directory"); // TODO like it isn't?
-                remapper = new StaticCacheRemapper(Integer.toHexString(ThreadLocalRandom.current().nextInt()));
-            }
+            var assetHashes = StaticCacheRemapper.copyTree(workingDirectory.resolve("assets"), outputDirectory.resolve("assets"));
 
-            var assetHashes = remapper.copyTree(workingDirectory.resolve("assets"), outputDirectory.resolve("assets"));
             assetHashes.forEach((k, v) -> {
                 fileHashes.put("assets/" + k, v); // TODO this seems like a hack
             });
@@ -219,12 +213,8 @@ public class BlogBuilder {
         }
 
         if (renderOptions.remapTemplateStatic()) {
-            var remapper = StaticCacheRemapper.fromGitRepository(templateDirectory);
-            if (remapper == null) {
-                LOGGER.warn("Template should be a Git directory");
-                remapper = new StaticCacheRemapper(Integer.toHexString(ThreadLocalRandom.current().nextInt()));
-            }
-            var templateStaticHashes = remapper.copyTree(templateDirectory.resolve("static"), outputDirectory.resolve("static"));
+            var templateStaticHashes = StaticCacheRemapper.copyTree(templateDirectory.resolve("static"), outputDirectory.resolve("static"));
+
             templateStaticHashes.forEach((k, v) -> {
                 fileHashes.put("static/" + k, v); // TODO this seems like a hack
             });
diff --git a/src/main/java/eu/m724/blog/StaticCacheRemapper.java b/src/main/java/eu/m724/blog/StaticCacheRemapper.java
index db95a84..1c6b988 100644
--- a/src/main/java/eu/m724/blog/StaticCacheRemapper.java
+++ b/src/main/java/eu/m724/blog/StaticCacheRemapper.java
@@ -1,61 +1,16 @@
 package eu.m724.blog;
 
-import org.eclipse.jgit.api.Git;
-import org.eclipse.jgit.api.errors.GitAPIException;
-import org.eclipse.jgit.lib.RepositoryBuilder;
-
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.stream.Collectors;
+import java.util.zip.CRC32C;
 
 public class StaticCacheRemapper {
-    private final String revision;
 
-    public StaticCacheRemapper(String revision) {
-        this.revision = revision;
-    }
-
-    public String getRevision() {
-        return revision;
-    }
-
-    /**
-     * Creates a {@link StaticCacheRemapper} from a static files folder
-     * @param path the {@link Path} that points to the folder with the static files
-     * @return null if no Git repository at {@code path}
-     */
-    public static StaticCacheRemapper fromGitRepository(Path path) {
-        path = path.toAbsolutePath();
-
-        var builder = new RepositoryBuilder()
-                .findGitDir(path.toFile());
-
-        if (builder.getGitDir() != null) {
-            var relativePath = builder.getGitDir().toPath().getParent().relativize(path);
-
-            try (
-                    var repository = builder.build();
-                    var git = new Git(repository)
-            ) {
-                var log = git.log().addPath(relativePath.toString()).call();
-                var commit = log.iterator().next();
-
-                if (commit != null) {
-                    var commitIdShort = commit.getId().getName().substring(0, 10); // TODO maybe less than 10 is ok
-                    return new StaticCacheRemapper(commitIdShort);
-                }
-            } catch (GitAPIException | IOException e) {
-                // TODO do something about it
-            }
-        }
-
-        return null;
-    }
-
-    public Map<String, String> copyTree(Path srcDir, Path destDir) throws IOException {
+    public static Map<String, String> copyTree(Path srcDir, Path destDir) throws IOException {
         var map = new HashMap<String, String>();
 
         try (var walk = Files.walk(srcDir)) {
@@ -70,12 +25,13 @@ public class StaticCacheRemapper {
                         Files.createDirectories(parent);
                     }
 
-                    var fileName = dest.getFileName().toString();
-                    fileName = insertHashInPath(fileName, revision);
-                    dest = dest.resolveSibling(fileName);
+                    var hash = hashFile(src);
+
+                    var filename = insertHashInPath(dest.getFileName().toString(), hash);
+                    dest = dest.resolveSibling(filename);
 
                     Files.copy(src, dest);
-                    map.put(rel.toString(), revision);
+                    map.put(rel.toString(), hash);
                 }
             }
         }
@@ -109,4 +65,25 @@ public class StaticCacheRemapper {
 
         return basePath + "." + hash + "." + extension;
     }
+
+    /**
+     * CRC32C hashes a file.
+     *
+     * @param path the path with the file
+     * @return the hex-encoded hash
+     * @throws IOException couldn't open input stream
+     */
+    private static String hashFile(Path path) throws IOException {
+        var crc = new CRC32C();
+
+        var buf = new byte[16384];
+        try (var is = Files.newInputStream(path)) {
+            int read;
+            while ((read = is.read(buf)) != -1) {
+                crc.update(buf, 0, read);
+            }
+        }
+
+        return Long.toHexString(crc.getValue());
+    }
 }