fixed "unknown HEAD hash id" on viewing the Git working copy from tortoiseGit

Author: host6

src/main/java/org/scm4j/vcs/GitVCS.java

@@ -285,12 +285,14 @@ public String getFileContent(String branchName, String fileRelativePath, String
 			 TreeWalk treeWalk = new TreeWalk(gitRepo)) {
 
 			git
-					.fetch()
-					.setRefSpecs(new RefSpec("+refs/heads/*:refs/heads/*"))
+					.pull()
 					.setCredentialsProvider(credentials)
 					.call();
+
+			// if executed first then version is considered as modified. So have uncommited change: 19.5-SNAPSHOT -> 18.5-SNAPSHOT
 			git
-					.pull()
+					.fetch()
+					.setRefSpecs(new RefSpec("+refs/heads/*:refs/heads/*"))
 					.setCredentialsProvider(credentials)
 					.call();
 
@@ -754,16 +756,18 @@ public VCSTag createTag(String branchName, String tagName, String tagMessage, St
 
 	private void updateLocalTags(Git git) throws Exception {
 		// need to remove tags from local repo which are removed in origin
+
 		git
-				.fetch()
-				.setRefSpecs(new RefSpec("+refs/tags/*:refs/tags/*"))
-				.setRemoveDeletedRefs(true)
+				.pull()
 				.setCredentialsProvider(credentials)
 				.call();
 		git
-				.pull()
+				.fetch()
+				.setRefSpecs(new RefSpec("+refs/tags/*:refs/tags/*"))
+				.setRemoveDeletedRefs(true)
 				.setCredentialsProvider(credentials)
 				.call();
+
 	}