diff --git a/doc/source/whatsnew/v0.24.0.txt b/doc/source/whatsnew/v0.24.0.txt
index 3b04d9937d7f2..7eb6204387337 100644
--- a/doc/source/whatsnew/v0.24.0.txt
+++ b/doc/source/whatsnew/v0.24.0.txt
@@ -180,6 +180,8 @@ Other Enhancements
 - :func:`~DataFrame.to_csv` and :func:`~DataFrame.to_json` now support ``compression='infer'`` to infer compression based on filename (:issue:`15008`)
 - :func:`to_timedelta` now supports iso-formated timedelta strings (:issue:`21877`)
 - :class:`Series` and :class:`DataFrame` now support :class:`Iterable` in constructor (:issue:`2193`)
+- New attribute :attr:`__git_version__` will return git commit sha of current build
+-
 
 .. _whatsnew_0240.api_breaking:
 
diff --git a/pandas/__init__.py b/pandas/__init__.py
index 97ae73174c09c..05b502f8b281b 100644
--- a/pandas/__init__.py
+++ b/pandas/__init__.py
@@ -83,6 +83,7 @@
 from ._version import get_versions
 v = get_versions()
 __version__ = v.get('closest-tag', v['version'])
+__git_version__ = v.get('full-revisionid')
 del get_versions, v
 
 # module level doc-string
diff --git a/pandas/tests/test_common.py b/pandas/tests/test_common.py
index e1c9202189972..7f41058a8c5d5 100644
--- a/pandas/tests/test_common.py
+++ b/pandas/tests/test_common.py
@@ -3,6 +3,7 @@
 import pytest
 import os
 import collections
+import string
 from functools import partial
 
 import numpy as np
@@ -12,6 +13,7 @@
 from pandas.core import ops
 from pandas.io.common import _get_handle
 import pandas.util.testing as tm
+import pandas as pd
 
 
 def test_get_callable_name():
@@ -165,3 +167,10 @@ def test_compression_warning(compression_only):
                                         check_stacklevel=False):
             with f:
                 df.to_csv(f, compression=compression_only)
+
+
+def test_git_version():
+    # GH 21295
+    git_version = pd.__git_version__
+    assert len(git_version) == 40
+    assert all(c in string.hexdigits for c in git_version)