--- a/testing/mozharness/configs/releases/dev_postrelease_firefox_beta.py
+++ b/testing/mozharness/configs/releases/dev_postrelease_firefox_beta.py
@@ -3,16 +3,17 @@ config = {
     "log_name": "bump_date",
     "version_files": [{"file": "browser/config/version_display.txt"}],
     "repo": {
         # date is used for staging mozilla-beta
         "repo": "https://hg.mozilla.org/projects/date",
         "branch": "default",
         "dest": "date",
         "vcs": "hg",
+        "clone_upstream_url": "https://hg.mozilla.org/mozilla-unified",
     },
     # date is used for staging mozilla-beta
     "push_dest": "ssh://hg.mozilla.org/projects/date",
     "ignore_no_changes": True,
     "ssh_user": "ffxbld",
     "ssh_key": "~/.ssh/ffxbld_rsa",
     "ship_it_root": "https://ship-it-dev.allizom.org",
     "ship_it_username":  "stage-ffxbld",

--- a/testing/mozharness/configs/releases/dev_postrelease_firefox_release.py
+++ b/testing/mozharness/configs/releases/dev_postrelease_firefox_release.py
@@ -6,16 +6,17 @@ config = {
         {"file": "config/milestone.txt"},
     ],
     "repo": {
         # jamun is used for staging mozilla-release
         "repo": "https://hg.mozilla.org/projects/jamun",
         "branch": "default",
         "dest": "jamun",
         "vcs": "hg",
+        "clone_upstream_url": "https://hg.mozilla.org/mozilla-unified",
     },
     "push_dest": "ssh://hg.mozilla.org/projects/jamun",
     "ignore_no_changes": True,
     "ssh_user": "ffxbld",
     "ssh_key": "~/.ssh/ffxbld_rsa",
     "ship_it_root": "https://ship-it-dev.allizom.org",
     "ship_it_username":  "stage-ffxbld",
 }

--- a/testing/mozharness/configs/releases/postrelease_firefox_beta.py
+++ b/testing/mozharness/configs/releases/postrelease_firefox_beta.py
@@ -1,16 +1,17 @@
 config = {
     "log_name": "bump_beta",
     "version_files": [{"file": "browser/config/version_display.txt"}],
     "repo": {
         "repo": "https://hg.mozilla.org/releases/mozilla-beta",
         "branch": "default",
         "dest": "mozilla-beta",
         "vcs": "hg",
+        "clone_upstream_url": "https://hg.mozilla.org/mozilla-unified",
     },
     "vcs_share_base": "/builds/hg-shared",
     "push_dest": "ssh://hg.mozilla.org/releases/mozilla-beta",
     "ignore_no_changes": True,
     "ssh_user": "ffxbld",
     "ssh_key": "~/.ssh/ffxbld_rsa",
     "ship_it_root": "https://ship-it.mozilla.org",
     "ship_it_username":  "ffxbld",

--- a/testing/mozharness/configs/releases/postrelease_firefox_esr52.py
+++ b/testing/mozharness/configs/releases/postrelease_firefox_esr52.py
@@ -5,16 +5,17 @@ config = {
         {"file": "browser/config/version_display.txt"},
         {"file": "config/milestone.txt"},
     ],
     "repo": {
         "repo": "https://hg.mozilla.org/releases/mozilla-esr52",
         "branch": "default",
         "dest": "mozilla-esr52",
         "vcs": "hg",
+        "clone_upstream_url": "https://hg.mozilla.org/mozilla-unified",
     },
     "vcs_share_base": "/builds/hg-shared",
     "push_dest": "ssh://hg.mozilla.org/releases/mozilla-esr52",
     "ignore_no_changes": True,
     "ssh_user": "ffxbld",
     "ssh_key": "~/.ssh/ffxbld_rsa",
     "ship_it_root": "https://ship-it.mozilla.org",
     "ship_it_username":  "ffxbld",

--- a/testing/mozharness/configs/releases/postrelease_firefox_release.py
+++ b/testing/mozharness/configs/releases/postrelease_firefox_release.py
@@ -5,16 +5,17 @@ config = {
         {"file": "browser/config/version_display.txt"},
         {"file": "config/milestone.txt"},
     ],
     "repo": {
         "repo": "https://hg.mozilla.org/releases/mozilla-release",
         "branch": "default",
         "dest": "mozilla-release",
         "vcs": "hg",
+        "clone_upstream_url": "https://hg.mozilla.org/mozilla-unified",
     },
     "vcs_share_base": "/builds/hg-shared",
     "push_dest": "ssh://hg.mozilla.org/releases/mozilla-release",
     "ignore_no_changes": True,
     "ssh_user": "ffxbld",
     "ssh_key": "~/.ssh/ffxbld_rsa",
     "ship_it_root": "https://ship-it.mozilla.org",
     "ship_it_username":  "ffxbld",