diff --git a/poky/bitbake/bin/bitbake b/poky/bitbake/bin/bitbake
index bc762bf..7127550 100755
--- a/poky/bitbake/bin/bitbake
+++ b/poky/bitbake/bin/bitbake
@@ -26,7 +26,7 @@
 if sys.getfilesystemencoding() != "utf-8":
     sys.exit("Please use a locale setting which supports UTF-8 (such as LANG=en_US.UTF-8).\nPython can't change the filesystem locale after loading so we need a UTF-8 when Python starts or things won't work.")
 
-__version__ = "1.49.2"
+__version__ = "1.50.0"
 
 if __name__ == "__main__":
     if __version__ != bb.__version__:
diff --git a/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-fetching.rst b/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-fetching.rst
index e9a5f33..bd6cc0e 100644
--- a/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-fetching.rst
+++ b/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-fetching.rst
@@ -441,6 +441,15 @@
    SRC_URI = "git://git.oe.handhelds.org/git/vip.git;tag=version-1"
    SRC_URI = "git://git.oe.handhelds.org/git/vip.git;protocol=http"
 
+.. note::
+
+   Specifying passwords directly in ``git://`` urls is not supported.
+   There are several reasons: ``SRC_URI`` is often written out to logs and
+   other places, and that could easily leak passwords; it is also all too
+   easy to share metadata without removing passwords. SSH keys, ``~/.netrc``
+   and ``~/.ssh/config`` files can be used as alternatives.
+
+
 .. _gitsm-fetcher:
 
 Git Submodule Fetcher (``gitsm://``)
diff --git a/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst b/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
index 1528b04..489fa15 100644
--- a/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
+++ b/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
@@ -1096,8 +1096,8 @@
          PREFERRED_PROVIDER_aaa = "bbb"
 
    :term:`PREFERRED_VERSION`
-      If there are multiple versions of recipes available, this variable
-      determines which recipe should be given preference. You must always
+      If there are multiple versions of a recipe available, this variable
+      determines which version should be given preference. You must always
       suffix the variable with the :term:`PN` you want to
       select, and you should set :term:`PV` accordingly for
       precedence.
@@ -1117,6 +1117,10 @@
          end of the string. You cannot use the wildcard character in any other
          location of the string.
 
+      If a recipe with the specified version is not available, a warning
+      message will be shown. See :term:`REQUIRED_VERSION` if you want this
+      to be an error instead.
+
    :term:`PREMIRRORS`
       Specifies additional paths from which BitBake gets source code. When
       the build system searches for source code, it first tries the local
@@ -1227,6 +1231,16 @@
       The directory in which a local copy of a ``google-repo`` directory is
       stored when it is synced.
 
+   :term:`REQUIRED_VERSION`
+      If there are multiple versions of a recipe available, this variable
+      determines which version should be given preference. ``REQUIRED_VERSION``
+      works in exactly the same manner as :term:`PREFERRED_VERSION`, except
+      that if the specified version is not available then an error message
+      is shown and the build fails immediately.
+
+      If both ``REQUIRED_VERSION`` and ``PREFERRED_VERSION`` are set for
+      the same recipe, the ``REQUIRED_VERSION`` value applies.
+
    :term:`RPROVIDES`
       A list of package name aliases that a package also provides. These
       aliases are useful for satisfying runtime dependencies of other
diff --git a/poky/bitbake/lib/bb/__init__.py b/poky/bitbake/lib/bb/__init__.py
index afce5cc..9f61dae 100644
--- a/poky/bitbake/lib/bb/__init__.py
+++ b/poky/bitbake/lib/bb/__init__.py
@@ -9,7 +9,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 #
 
-__version__ = "1.49.2"
+__version__ = "1.50.0"
 
 import sys
 if sys.version_info < (3, 5, 0):
diff --git a/poky/bitbake/lib/bb/runqueue.py b/poky/bitbake/lib/bb/runqueue.py
index 80d7f6c..cd56a55 100644
--- a/poky/bitbake/lib/bb/runqueue.py
+++ b/poky/bitbake/lib/bb/runqueue.py
@@ -2457,6 +2457,9 @@
                 if dep in self.scenequeue_covered or dep in self.scenequeue_notcovered:
                     # dependency could be already processed, e.g. noexec setscene task
                     continue
+                noexec, stamppresent = check_setscene_stamps(dep, self.rqdata, self.rq, self.stampcache)
+                if noexec or stamppresent:
+                    continue
                 logger.debug2("%s was unavailable and is a hard dependency of %s so skipping" % (task, dep))
                 self.sq_task_failoutright(dep)
                 continue
@@ -2795,6 +2798,26 @@
         event = bb.event.StaleSetSceneTasks(found[mc])
         bb.event.fire(event, cooker.databuilder.mcdata[mc])
 
+def check_setscene_stamps(tid, rqdata, rq, stampcache, noexecstamp=False):
+
+    (mc, fn, taskname, taskfn) = split_tid_mcfn(tid)
+
+    taskdep = rqdata.dataCaches[mc].task_deps[taskfn]
+
+    if 'noexec' in taskdep and taskname in taskdep['noexec']:
+        bb.build.make_stamp(taskname + "_setscene", rqdata.dataCaches[mc], taskfn)
+        return True, False
+
+    if rq.check_stamp_task(tid, taskname + "_setscene", cache=stampcache):
+        logger.debug2('Setscene stamp current for task %s', tid)
+        return False, True
+
+    if rq.check_stamp_task(tid, taskname, recurse = True, cache=stampcache):
+        logger.debug2('Normal stamp current for task %s', tid)
+        return False, True
+
+    return False, False
+
 def update_scenequeue_data(tids, sqdata, rqdata, rq, cooker, stampcache, sqrq, summary=True):
 
     tocheck = set()
@@ -2805,24 +2828,14 @@
         if tid in sqdata.valid:
             sqdata.valid.remove(tid)
 
-        (mc, fn, taskname, taskfn) = split_tid_mcfn(tid)
+        noexec, stamppresent = check_setscene_stamps(tid, rqdata, rq, stampcache, noexecstamp=True)
 
-        taskdep = rqdata.dataCaches[mc].task_deps[taskfn]
-
-        if 'noexec' in taskdep and taskname in taskdep['noexec']:
+        if noexec:
             sqdata.noexec.add(tid)
             sqrq.sq_task_skip(tid)
-            bb.build.make_stamp(taskname + "_setscene", rqdata.dataCaches[mc], taskfn)
             continue
 
-        if rq.check_stamp_task(tid, taskname + "_setscene", cache=stampcache):
-            logger.debug2('Setscene stamp current for task %s', tid)
-            sqdata.stamppresent.add(tid)
-            sqrq.sq_task_skip(tid)
-            continue
-
-        if rq.check_stamp_task(tid, taskname, recurse = True, cache=stampcache):
-            logger.debug2('Normal stamp current for task %s', tid)
+        if stamppresent:
             sqdata.stamppresent.add(tid)
             sqrq.sq_task_skip(tid)
             continue