diff --git a/src/bonsai/bonsai/bim/module/drawing/sheeter.py b/src/bonsai/bonsai/bim/module/drawing/sheeter.py
index df57b6efb5..7b54e23ed5 100644
--- a/src/bonsai/bonsai/bim/module/drawing/sheeter.py
+++ b/src/bonsai/bonsai/bim/module/drawing/sheeter.py
@@ -319,7 +319,12 @@ class SheetBuilder:
     def build_titleblock(self, root: ET.Element, sheet: ifcopenshell.entity_instance) -> None:
         titleblock = root.findall(f'{SVG}g[@data-type="titleblock"]')[0]
         image = titleblock.findall(f"{SVG}image")[0]
-        g = self.parse_embedded_svg(image, sheet.get_info())
+        # Extend the raw IFC attribute dict with extra, non-IFC substitution
+        # keys available to custom titleblock templates. This does not
+        # change what sheet.get_info() itself returns elsewhere.
+        titleblock_data = dict(sheet.get_info())
+        titleblock_data["GitDescribe"] = tool.IfcGit.get_repo_description(tool.Ifc.get_path()) or ""
+        g = self.parse_embedded_svg(image, titleblock_data)
         grid_north = ifcopenshell.util.geolocation.get_grid_north(tool.Ifc.get()) * -1
         true_north = ifcopenshell.util.geolocation.get_true_north(tool.Ifc.get()) * -1
         for north in g.iterfind(f'.//{SVG}g[@data-type="grid-north"]'):
diff --git a/src/bonsai/bonsai/tool/ifcgit.py b/src/bonsai/bonsai/tool/ifcgit.py
index 4ceb6fb5e5..8b13274664 100644
--- a/src/bonsai/bonsai/tool/ifcgit.py
+++ b/src/bonsai/bonsai/tool/ifcgit.py
@@ -40,8 +40,11 @@ try:
     import git
     import git.exc
     import git.objects
+
+    GIT_AVAILABLE = True
 except ImportError:
     print("Warning: GitPython not available.")
+    GIT_AVAILABLE = False
 
 if TYPE_CHECKING:
     import git
@@ -124,6 +127,25 @@ class IfcGit(bonsai.core.tool.IfcGit):
             IfcGitRepo.repo = repo
         return repo
 
+    @classmethod
+    def get_repo_description(cls, path_ifc: str) -> Union[str, None]:
+        """Return a `git describe --tags --always --dirty` style string for the
+        repository containing path_ifc (e.g. "v1.2-4-gabcdef1"), or None if
+        unavailable.
+
+        Returns None instead of raising when GitPython isn't installed, the
+        path isn't inside a git repository, or the repository has no commits.
+        """
+        if not GIT_AVAILABLE:
+            return None
+        try:
+            repo = cls.repo_from_path(path_ifc)
+            if repo is None:
+                return None
+            return repo.git.describe(tags=True, always=True, dirty=True)
+        except Exception:
+            return None
+
     @classmethod
     def add_file_to_repo(cls, repo: git.Repo, path_file: str) -> None:
         if os.name == "nt":