bitbake: fetch2/git: Handle srcrevs for annotated tags in tag check

If SRCREV points at an annotated tag, the comparision code can fail
as the resolved tag might not be the same sha.

Handle this by also resolving the SRCREV. We only need to do this if
they don't match in the first place for a minor performance win.

Also add a test for this.

(Bitbake rev: 136c06e251de68ed64355ec6b47a522ff3a372e3)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/git.py

@@ -730,7 +730,12 @@ class Git(FetchMethod):
             output = runfetchcmd("%s rev-list -n 1 %s" % (ud.basecmd, ud.parm['tag']), d, workdir=destdir)
             output = output.strip()
             if output != ud.revision:
-                raise bb.fetch2.FetchError("The revision the git tag '%s' resolved to didn't match the SRCREV in use (%s vs %s)" % (ud.parm['tag'], output, ud.revision), ud.url)
+                # It is possible ud.revision is the revision on an annotated tag which won't match the output of rev-list
+                # If it resolves to the same thing there isn't a problem.
+                output2 = runfetchcmd("%s rev-list -n 1 %s" % (ud.basecmd, ud.revision), d, workdir=destdir)
+                output2 = output2.strip()
+                if output != output2:
+                    raise bb.fetch2.FetchError("The revision the git tag '%s' resolved to didn't match the SRCREV in use (%s vs %s)" % (ud.parm['tag'], output, ud.revision), ud.url)
 
         repourl = self._get_repo_url(ud)
         runfetchcmd("%s remote set-url origin %s" % (ud.basecmd, shlex.quote(repourl)), d, workdir=destdir)

bitbake/lib/bb/tests/fetch.py

@@ -3139,6 +3139,13 @@ class GitTagVerificationTests(FetcherTest):
         fetcher.download()
         fetcher.unpack(self.unpackdir)
 
+    def test_annotated_tag_rev_match(self):
+        # Test a url with rev= and tag= set works
+        # rev is the annotated tag revision in this case
+        fetcher = bb.fetch.Fetch(["git://git.openembedded.org/bitbake;branch=2.8;protocol=https;rev=6d363159e4b7dc566fc40d069b2615e61774a7d8;tag=2.8.7"], self.d)
+        fetcher.download()
+        fetcher.unpack(self.unpackdir)
+
     @skipIfNoNetwork()
     def test_tag_rev_match2(self):
         # Test a url with SRCREV and tag= set works