Parse repomd.xml to determin the location of the pkgorigins file

createrepo switched to hashing all files by default. regardless
of the name of the file this works.

the  correct version not the el6 and never version

builder/kojid

@@ -54,6 +54,7 @@ from fnmatch import fnmatch
 from gzip import GzipFile
 from optparse import OptionParser, SUPPRESS_HELP
 from StringIO import StringIO
+from yum import repoMDObject
 
 #imports for LiveCD and Appliance handler
 image_enabled = False
@@ -552,8 +553,18 @@ class BuildRoot(object):
         pathinfo = koji.PathInfo(topdir='')
         #XXX - cheap hack to get relative paths
         repodir = pathinfo.repo(self.repo_info['id'], self.repo_info['tag_name'])
-        relpath = os.path.join(repodir, self.br_arch, 'repodata', 'pkgorigins.gz')
+        repomdpath = os.path.join(repodir, self.br_arch, 'repodata', 'repomd.xml')
+
         opts = dict([(k, getattr(self.options, k)) for k in 'topurl','topdir'])
+        fo = koji.openRemoteFile(repomdpath, **opts)
+        try:
+            repodata = repoMDObject.RepoMD('ourrepo', fo)
+        except:
+            raise koji.BuildError, "Unable to parse repomd.xml file for %s" % os.path.join(repodir, self.br_arch)
+        data  = repodata.getData('origin')
+        pkgorigins  = data.location[1]
+
+        relpath = os.path.join(repodir, self.br_arch, pkgorigins)
         fo = koji.openRemoteFile(relpath, **opts)
         #at this point we know there were external repos at the create event,
         #so there should be an origins file.