--- a/testing/mozharness/configs/single_locale/mozilla-beta.py
+++ b/testing/mozharness/configs/single_locale/mozilla-beta.py
@@ -13,17 +13,17 @@ config = {
     "repos": [{
         "vcs": "hg",
         "repo": "https://hg.mozilla.org/build/tools",
         "branch": "default",
         "dest": "tools",
     }, {
         "vcs": "hgtool",
         "repo": "https://hg.mozilla.org/releases/mozilla-beta",
-        "revision": "default",
+        "revision": "%(revision)s",
         "dest": "mozilla-beta",
     }, {
         "vcs": "hgtool",
         "repo": "https://hg.mozilla.org/build/compare-locales",
         "revision": "RELEASE_AUTOMATION"
     }],
     # purge options
     'purge_minsize': 12,

--- a/testing/mozharness/configs/single_locale/mozilla-esr45.py
+++ b/testing/mozharness/configs/single_locale/mozilla-esr45.py
@@ -13,17 +13,17 @@ config = {
     "repos": [{
         "vcs": "hg",
         "repo": "https://hg.mozilla.org/build/tools",
         "branch": "default",
         "dest": "tools",
     }, {
         "vcs": "hgtool",
         "repo": "https://hg.mozilla.org/releases/mozilla-esr45",
-        "revision": "default",
+        "revision": "%(revision)s",
         "dest": "mozilla-esr45",
     }, {
         "vcs": "hgtool",
         "repo": "https://hg.mozilla.org/build/compare-locales",
         "revision": "RELEASE_AUTOMATION"
     }],
     # purge options
     'purge_minsize': 12,

--- a/testing/mozharness/configs/single_locale/mozilla-release.py
+++ b/testing/mozharness/configs/single_locale/mozilla-release.py
@@ -13,17 +13,17 @@ config = {
     "repos": [{
         "vcs": "hg",
         "repo": "https://hg.mozilla.org/build/tools",
         "branch": "default",
         "dest": "tools",
     }, {
         "vcs": "hgtool",
         "repo": "https://hg.mozilla.org/releases/mozilla-release",
-        "revision": "default",
+        "revision": "%(revision)s",
         "dest": "mozilla-release",
     }, {
         "vcs": "hgtool",
         "repo": "https://hg.mozilla.org/build/compare-locales",
         "revision": "RELEASE_AUTOMATION"
     }],
     # purge options
     'purge_minsize': 12,