Reverse order of commits when copying a selection

The array we receive is top-to-bottom in the on-screen
list, i.e. new-to-old in the git history which seems to
be the wrong way round.

Author: ssp

Classes/Util/GitXCommitCopier.m

@@ -55,7 +55,7 @@ + (NSString *) toPatch:(NSArray<PBGitCommit *> *)commits {
 + (NSArray<NSString *> *) transformCommits:(NSArray<PBGitCommit *> *)commits with:(NSString *(^)(PBGitCommit *  commit))transformer {
 
 	NSMutableArray *strings = [NSMutableArray arrayWithCapacity:commits.count];
-	[commits enumerateObjectsUsingBlock:^(PBGitCommit * _Nonnull commit, NSUInteger idx, BOOL * _Nonnull stop) {
+	[commits enumerateObjectsWithOptions:NSEnumerationReverse usingBlock:^(PBGitCommit * _Nonnull commit, NSUInteger idx, BOOL * _Nonnull stop) {
 		[strings addObject:transformer(commit)];
 	}];