diff --git a/pkgs/build-support/fetchcodeberg/default.nix b/pkgs/build-support/fetchcodeberg/default.nix
index 4277e5a5613c..aac1f97a7fdb 100644
--- a/pkgs/build-support/fetchcodeberg/default.nix
+++ b/pkgs/build-support/fetchcodeberg/default.nix
@@ -1,2 +1,11 @@
 { lib, fetchFromGitea }:
-lib.makeOverridable (args: fetchFromGitea ({ domain = "codeberg.org"; } // args))
+lib.makeOverridable (
+  args:
+  fetchFromGitea (
+    {
+      domain = "codeberg.org";
+      functionName = "fetchFromCodeberg";
+    }
+    // args
+  )
+)
diff --git a/pkgs/build-support/fetchgitea/default.nix b/pkgs/build-support/fetchgitea/default.nix
index a7910b671e9b..cfa7c592db1f 100644
--- a/pkgs/build-support/fetchgitea/default.nix
+++ b/pkgs/build-support/fetchgitea/default.nix
@@ -3,7 +3,20 @@
 { lib, fetchFromGitHub }:
 
 lib.makeOverridable (
-  { domain, ... }@args:
+  {
+    domain,
+    functionName ? "fetchFromGitea",
+    ...
+  }@args:
 
-  fetchFromGitHub ((removeAttrs args [ "domain" ]) // { githubBase = domain; })
+  fetchFromGitHub (
+    (removeAttrs args [
+      "domain"
+      "functionName"
+    ])
+    // {
+      inherit functionName;
+      githubBase = domain;
+    }
+  )
 )
diff --git a/pkgs/build-support/fetchgithub/default.nix b/pkgs/build-support/fetchgithub/default.nix
index f21256f5d57b..27a19b53b18d 100644
--- a/pkgs/build-support/fetchgithub/default.nix
+++ b/pkgs/build-support/fetchgithub/default.nix
@@ -48,6 +48,7 @@ decorate (
     repo,
     tag ? null,
     rev ? null,
+    functionName ? "fetchFromGitHub",
     # TODO(@ShamrockLee): Add back after reconstruction with lib.extendMkDerivation
     # name ? repoRevToNameMaybe finalAttrs.repo (lib.revOrTag finalAttrs.revCustom finalAttrs.tag) "github",
     private ? false,
@@ -60,7 +61,7 @@ decorate (
 
   assert (
     lib.xor (tag == null) (rev == null)
-    || throw "fetchFromGitHub requires one of either `rev` or `tag` to be provided (not both)."
+    || throw "${functionName} requires one of either `rev` or `tag` to be provided (not both)."
   );
 
   let
@@ -115,6 +116,7 @@ decorate (
         "repo"
         "tag"
         "rev"
+        "functionName"
         "private"
         "githubBase"
         "varPrefix"
@@ -135,7 +137,7 @@ decorate (
         in
         ''
           if [ -z "''$${varBase}USERNAME" -o -z "''$${varBase}PASSWORD" ]; then
-            echo "Error: Private fetchFromGitHub requires the nix building process (nix-daemon in multi user mode) to have the ${varBase}USERNAME and ${varBase}PASSWORD env vars set." >&2
+            echo "Error: Private ${functionName} requires the nix building process (nix-daemon in multi user mode) to have the ${varBase}USERNAME and ${varBase}PASSWORD env vars set." >&2
             exit 1
           fi
           cat > netrc <<EOF