diff --git a/poky/bitbake/lib/bb/fetch2/__init__.py b/poky/bitbake/lib/bb/fetch2/__init__.py
index d371741..5dfe5ff 100644
--- a/poky/bitbake/lib/bb/fetch2/__init__.py
+++ b/poky/bitbake/lib/bb/fetch2/__init__.py
@@ -113,7 +113,7 @@
         self.args = (missing, url)
 
 class ParameterError(BBFetchException):
-    """Exception raised when a url cannot be proccessed due to invalid parameters."""
+    """Exception raised when a url cannot be processed due to invalid parameters."""
     def __init__(self, message, url):
         msg = "URL: '%s' has invalid parameters. %s" % (url, message)
         self.url = url
@@ -182,7 +182,7 @@
     Some notes about relative URIs: while it's specified that
     a URI beginning with <scheme>:// should either be directly
     followed by a hostname or a /, the old URI handling of the
-    fetch2 library did not comform to this. Therefore, this URI
+    fetch2 library did not conform to this. Therefore, this URI
     class has some kludges to make sure that URIs are parsed in
     a way comforming to bitbake's current usage. This URI class
     supports the following:
@@ -199,7 +199,7 @@
      file://hostname/absolute/path.diff (would be IETF compliant)
 
     Note that the last case only applies to a list of
-    "whitelisted" schemes (currently only file://), that requires
+    explicitly allowed schemes (currently only file://), that requires
     its URIs to not have a network location.
     """
 
@@ -473,10 +473,13 @@
                     basename = os.path.basename(ud.localpath)
                 if basename:
                     uri_basename = os.path.basename(uri_decoded[loc])
-                    if uri_basename and basename != uri_basename and result_decoded[loc].endswith(uri_basename):
-                        result_decoded[loc] = result_decoded[loc].replace(uri_basename, basename)
-                    elif not result_decoded[loc].endswith(basename):
-                        result_decoded[loc] = os.path.join(result_decoded[loc], basename)
+                    # Prefix with a slash as a sentinel in case
+                    # result_decoded[loc] does not contain one.
+                    path = "/" + result_decoded[loc]
+                    if uri_basename and basename != uri_basename and path.endswith("/" + uri_basename):
+                        result_decoded[loc] = path[1:-len(uri_basename)] + basename
+                    elif not path.endswith("/" + basename):
+                        result_decoded[loc] = os.path.join(path[1:], basename)
         else:
             return None
     result = encodeurl(result_decoded)
@@ -762,6 +765,7 @@
     that fetcher provides a method with the given name and the same signature as sortable_revision.
     """
 
+    d.setVar("__BBSEENSRCREV", "1")
     recursion = d.getVar("__BBINSRCREV")
     if recursion:
         raise FetchError("There are recursive references in fetcher variables, likely through SRC_URI")
@@ -847,6 +851,17 @@
                      'AWS_SECRET_ACCESS_KEY',
                      'AWS_DEFAULT_REGION']
 
+def get_fetcher_environment(d):
+    newenv = {}
+    origenv = d.getVar("BB_ORIGENV")
+    for name in bb.fetch2.FETCH_EXPORT_VARS:
+        value = d.getVar(name)
+        if not value and origenv:
+            value = origenv.getVar(name)
+        if value:
+            newenv[name] = value
+    return newenv
+
 def runfetchcmd(cmd, d, quiet=False, cleanup=None, log=None, workdir=None):
     """
     Run cmd returning the command output
diff --git a/poky/bitbake/lib/bb/fetch2/git.py b/poky/bitbake/lib/bb/fetch2/git.py
index 30da8e9..b3c5e6d 100644
--- a/poky/bitbake/lib/bb/fetch2/git.py
+++ b/poky/bitbake/lib/bb/fetch2/git.py
@@ -399,7 +399,7 @@
 
         if self._contains_lfs(ud, d, ud.clonedir) and self._need_lfs(ud):
             # Unpack temporary working copy, use it to run 'git checkout' to force pre-fetching
-            # of all LFS blobs needed at the the srcrev.
+            # of all LFS blobs needed at the srcrev.
             #
             # It would be nice to just do this inline here by running 'git-lfs fetch'
             # on the bare clonedir, but that operation requires a working copy on some
@@ -727,6 +727,12 @@
         """
         Compute the HEAD revision for the url
         """
+        if not d.getVar("__BBSEENSRCREV"):
+            raise bb.fetch2.FetchError("Recipe uses a floating tag/branch without a fixed SRCREV yet doesn't call bb.fetch2.get_srcrev() (use SRCPV in PV for OE).")
+
+        # Ensure we mark as not cached
+        bb.fetch2.get_autorev(d)
+
         output = self._lsremote(ud, d, "")
         # Tags of the form ^{} may not work, need to fallback to other form
         if ud.unresolvedrev[name][:5] == "refs/" or ud.usehead:
diff --git a/poky/bitbake/lib/bb/fetch2/npm.py b/poky/bitbake/lib/bb/fetch2/npm.py
index b3a3a44..8f7c10a 100644
--- a/poky/bitbake/lib/bb/fetch2/npm.py
+++ b/poky/bitbake/lib/bb/fetch2/npm.py
@@ -52,9 +52,13 @@
     """Get the filename of a npm package"""
     return npm_package(package) + "-" + version + ".tgz"
 
-def npm_localfile(package, version):
+def npm_localfile(package, version=None):
     """Get the local filename of a npm package"""
-    return os.path.join("npm2", npm_filename(package, version))
+    if version is not None:
+        filename = npm_filename(package, version)
+    else:
+        filename = package
+    return os.path.join("npm2", filename)
 
 def npm_integrity(integrity):
     """
@@ -157,7 +161,7 @@
         # Using the 'downloadfilename' parameter as local filename
         # or the npm package name.
         if "downloadfilename" in ud.parm:
-            ud.localfile = d.expand(ud.parm["downloadfilename"])
+            ud.localfile = npm_localfile(d.expand(ud.parm["downloadfilename"]))
         else:
             ud.localfile = npm_localfile(ud.package, ud.version)
 
diff --git a/poky/bitbake/lib/bb/fetch2/npmsw.py b/poky/bitbake/lib/bb/fetch2/npmsw.py
index 879ba5d..a8c4d35 100644
--- a/poky/bitbake/lib/bb/fetch2/npmsw.py
+++ b/poky/bitbake/lib/bb/fetch2/npmsw.py
@@ -117,7 +117,7 @@
 
             # Handle http tarball sources
             elif version.startswith("http") and integrity:
-                localfile = os.path.join("npm2", os.path.basename(version))
+                localfile = npm_localfile(os.path.basename(version))
 
                 uri = URI(version)
                 uri.params["downloadfilename"] = localfile
diff --git a/poky/bitbake/lib/bb/fetch2/wget.py b/poky/bitbake/lib/bb/fetch2/wget.py
index 253cabc..b3a3de5 100644
--- a/poky/bitbake/lib/bb/fetch2/wget.py
+++ b/poky/bitbake/lib/bb/fetch2/wget.py
@@ -228,7 +228,7 @@
                         # We let the request fail and expect it to be
                         # tried once more ("try_again" in check_status()),
                         # with the dead connection removed from the cache.
-                        # If it still fails, we give up, which can happend for bad
+                        # If it still fails, we give up, which can happen for bad
                         # HTTP proxy settings.
                         fetch.connection_cache.remove_connection(h.host, h.port)
                     raise urllib.error.URLError(err)
@@ -315,15 +315,7 @@
         # Avoid tramping the environment too much by using bb.utils.environment
         # to scope the changes to the build_opener request, which is when the
         # environment lookups happen.
-        newenv = {}
-        for name in bb.fetch2.FETCH_EXPORT_VARS:
-            value = d.getVar(name)
-            if not value:
-                origenv = d.getVar("BB_ORIGENV")
-                if origenv:
-                    value = origenv.getVar(name)
-            if value:
-                newenv[name] = value
+        newenv = bb.fetch2.get_fetcher_environment(d)
 
         with bb.utils.environment(**newenv):
             import ssl