diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/pack/PackWriter.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/pack/PackWriter.java
index d9fa393c7..683d1cd6e 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/pack/PackWriter.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/pack/PackWriter.java
@@ -1718,6 +1718,7 @@ public class PackWriter implements AutoCloseable {
 		final int maxBases = config.getDeltaSearchWindowSize();
 		Set<RevTree> baseTrees = new HashSet<RevTree>();
 		BlockList<RevCommit> commits = new BlockList<RevCommit>();
+		Set<ObjectId> roots = new HashSet<>();
 		RevCommit c;
 		while ((c = walker.next()) != null) {
 			if (exclude(c))
@@ -1729,8 +1730,12 @@ public class PackWriter implements AutoCloseable {
 			}
 
 			commits.add(c);
+			if (c.getParentCount() == 0) {
+				roots.add(c.copy());
+			}
 			countingMonitor.update(1);
 		}
+		stats.rootCommits = Collections.unmodifiableSet(roots);
 
 		if (shallowPack) {
 			for (RevCommit cmit : commits) {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/pack/PackStatistics.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/pack/PackStatistics.java
index 24efb943c..a811fe3cd 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/pack/PackStatistics.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/pack/PackStatistics.java
@@ -178,6 +178,9 @@ public class PackStatistics {
 		/** The collection of reused packs in the upload. */
 		public List<CachedPack> reusedPacks;
 
+		/** Commits with no parents. */
+		public Set<ObjectId> rootCommits;
+
 		/** If a shallow pack, the depth in commits. */
 		public int depth;
 
@@ -299,6 +302,11 @@ public class PackStatistics {
 		return statistics.reusedPacks;
 	}
 
+	/** @return unmodifiable collection of the root commits of the history. */
+	public Set<ObjectId> getRootCommits() {
+		return statistics.rootCommits;
+	}
+
 	/**
 	 * @return number of objects in the output pack that went through the delta
 	 *         search process in order to find a potential delta base.