fix compile error in exception handling due to upstream change

Change-Id: I0bad4edec0bd3ec46b7372f338750fac1bcd4431
diff --git a/org.eclipse.mylyn.git.core/src/org/eclipse/mylyn/internal/git/core/GitConnector.java b/org.eclipse.mylyn.git.core/src/org/eclipse/mylyn/internal/git/core/GitConnector.java
index a5133f4..7ce37a6 100644
--- a/org.eclipse.mylyn.git.core/src/org/eclipse/mylyn/internal/git/core/GitConnector.java
+++ b/org.eclipse.mylyn.git.core/src/org/eclipse/mylyn/internal/git/core/GitConnector.java
@@ -34,7 +34,6 @@
 import org.eclipse.egit.core.RepositoryCache;
 import org.eclipse.egit.core.project.RepositoryMapping;
 import org.eclipse.jgit.api.Git;
-import org.eclipse.jgit.api.errors.NoHeadException;
 import org.eclipse.jgit.diff.DiffEntry;
 import org.eclipse.jgit.errors.AmbiguousObjectException;
 import org.eclipse.jgit.errors.CorruptObjectException;
@@ -242,7 +241,7 @@
 		Iterable<RevCommit> revs;
 		try {
 			revs = git.log().call();
-		} catch (NoHeadException e) {
+		} catch (Exception e) {
 			throw new RuntimeException(e);
 		}