diff --git a/varats/varats/tools/driver_casestudy.py b/varats/varats/tools/driver_casestudy.py
index 2f40a8409..364ddc69d 100644
--- a/varats/varats/tools/driver_casestudy.py
+++ b/varats/varats/tools/driver_casestudy.py
@@ -69,6 +69,7 @@
     TypedChoice,
     EnumChoice,
     create_multi_case_study_choice,
+    ShortCommitHashParamType,
 )
 from varats.utils.git_util import (
     get_initial_commit,
@@ -555,7 +556,11 @@ def __casestudy_package(
 @click.option(
     "--project", required=True, help="Project to view result files for."
 )
-@click.option("--commit-hash", help="Commit hash to view result files for.")
+@click.option(
+    "--commit-hash",
+    type=ShortCommitHashParamType(),
+    help="Commit hash to view result files for."
+)
 @click.option(
     "--newest-only",
     is_flag=True,
diff --git a/varats/varats/ts_utils/click_param_types.py b/varats/varats/ts_utils/click_param_types.py
index f080fa4e7..bbd0e6042 100644
--- a/varats/varats/ts_utils/click_param_types.py
+++ b/varats/varats/ts_utils/click_param_types.py
@@ -5,6 +5,7 @@
 
 import click
 from benchbuild.experiment import ExperimentRegistry
+from click import ParamType
 
 from varats.data.discover_reports import initialize_reports
 from varats.experiments.discover_experiments import initialize_experiments
@@ -17,6 +18,7 @@
 )
 from varats.ts_utils.cli_util import CLIOptionTy, convert_value, make_cli_option
 from varats.utils.exceptions import ConfigurationLookupError
+from varats.utils.git_util import ShortCommitHash
 
 if tp.TYPE_CHECKING:
     # pylint: disable=unused-import
@@ -184,8 +186,22 @@ def create_multi_experiment_type_choice(
     return TypedMultiChoice(value_dict)
 
 
+class ShortCommitHashParamType(ParamType):
+    """Click parameter type for commit hashes."""
+    name = "ShortCommitHash"
+
+    def convert(
+        self, value: tp.Union[str, ShortCommitHash],
+        param: tp.Optional[click.Parameter], ctx: tp.Optional[click.Context]
+    ) -> ShortCommitHash:
+        if isinstance(value, ShortCommitHash):
+            return value
+
+        return ShortCommitHash(value)
+
+
 # ------------------------------------------------------------------------------
-# Predefined CLI Options
+# Predefined plot/table CLI Options
 # ------------------------------------------------------------------------------
 
 REQUIRE_CASE_STUDY: CLIOptionTy = convert_value(