[oe] [RFC] bitbake git fetcher fix

[Otavio Salvador]

Hello,

I've found a issue when using current GIT fetcher and bellow patch
fixes it for me; could someone take a look at it and commit if it does
look fine?

Cheers,

Index: lib/bb/fetch/git.py
===================================================================
--- lib/bb/fetch/git.py	(revisão 1150)
+++ lib/bb/fetch/git.py	(cópia de trabalho)
@@ -42,19 +42,17 @@
             ud.proto = ud.parm['protocol']
 
         ud.branch = ud.parm.get("branch", "master")
+        ud.tag = None
 
         tag = Fetch.srcrev_internal_helper(ud, d)
         if tag is True:
             ud.tag = self.latest_revision(url, ud, d)	
-        elif tag:
+        elif tag and tag != "1":
             ud.tag = tag
 
-        if not ud.tag:
+        if not ud.tag or ud.tag == "master":
             ud.tag = self.latest_revision(url, ud, d)	
 
-        if ud.tag == "master":
-            ud.tag = self.latest_revision(url, ud, d)
-
         ud.localfile = data.expand('git_%s%s_%s.tar.gz' % (ud.host, ud.path.replace('/', '.'), ud.tag), d)
 
         return os.path.join(data.getVar("DL_DIR", d, True), ud.localfile)

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