diff --git a/meta/classes-global/base.bbclass b/meta/classes-global/base.bbclass
index 62f2814bb7..66b2e25f71 100644
--- a/meta/classes-global/base.bbclass
+++ b/meta/classes-global/base.bbclass
@@ -165,13 +165,49 @@ def setup_hosttools_dir(dest, toolsvar, d, fatal=True):
     if notfound and fatal:
         bb.fatal("The following required tools (as specified by HOSTTOOLS) appear to be unavailable in PATH, please install them in order to proceed:\n  %s" % " ".join(notfound))
 
+def check_srcrev_set(d):
+    import bb.fetch2
+    src_uri = (d.getVar('SRC_URI', False) or '').split()
+    pn = d.getVar('PN')
+    found_issue = False
+    for uri in src_uri:
+        try:
+            (scheme, _, _, _, _, params) = bb.fetch2.decodeurl(uri)
+        except Exception:
+            continue
+        if scheme not in ('git', 'gitsm', 'hg', 'svn'):
+            continue
+        if params.get('rev', ''):
+            continue
+        name = params.get('name', '') or 'default'
+        candidates = [
+            'SRCREV_%s:pn-%s' % (name, pn),
+            'SRCREV_%s' % name,
+            'SRCREV:pn-%s' % pn,
+            'SRCREV',
+        ]
+        raw = None
+        for candidate in candidates:
+            raw = d.getVar(candidate, False)
+            if raw:
+                break
+        if not raw or raw == 'INVALID':
+            found_issue = True
+            if bb.utils.contains('ERROR_QA', 'missing-srcrev', True, False, d):
+                bb.error("%s: %s not set for %s" % (pn, candidates[-1], uri))
+            elif bb.utils.contains('WARN_QA', 'missing-srcrev', True, False, d):
+                bb.warn("%s: %s not set for %s" % (pn, candidates[-1], uri))
+        elif '${AUTOREV}' in raw:
+            return True
+    return not found_issue
+        
+
 # We can't use vardepvalue against do_fetch directly since that would overwrite
 # the other task dependencies so we use an indirect function.
 python fetcher_hashes_dummyfunc() {
     return
 }
-fetcher_hashes_dummyfunc[vardepvalue] = "${@bb.fetch.get_hashvalue(d)}"
-
+fetcher_hashes_dummyfunc[vardepvalue] = "${@bb.fetch.get_hashvalue(d) if check_srcrev_set(d) else ''}"
 addtask fetch
 do_fetch[dirs] = "${DL_DIR}"
 do_fetch[file-checksums] = "${@bb.fetch.get_checksum_file_list(d)}"