cmd(Git.rev_list): Fix variable expansion (#455)

Author: tony

CHANGES

@@ -15,6 +15,12 @@ $ pip install --user --upgrade --pre libvcs
 
 <!-- Maintainers, insert changes / features for the next release here -->
 
+### Fixes
+
+- `Git.rev_list`: Fix argument expansion (#455)
+
+  Resolves issue with _fatal: '--max-count': not an integer_.
+
 ### Testing
 
 - CI: Bump actions to Node 20 releases (#456)

src/libvcs/cmd/git.py

@@ -1918,16 +1918,16 @@ def rev_list(
         '[master ...] Moo'
 
         >>> git.rev_list(commit="HEAD", max_count=1)
-        ''
+        '...'
 
         >>> git.rev_list(commit="HEAD", path=".", max_count=1, header=True)
-        ''
+        '...'
 
         >>> git.rev_list(commit="origin..HEAD", max_count=1, _all=True, header=True)
-        ''
+        '...'
 
         >>> git.rev_list(commit="origin..HEAD", max_count=1, header=True)
-        ''
+        '...'
         """
         required_flags: list[str] = []
         path_flags: list[str] = []
@@ -1976,7 +1976,7 @@ def rev_list(
             (max_parents, "--max-parents"),
         ]:
             if int_flag is not None:
-                local_flags.extend([int_shell_flag, str(int_shell_flag)])
+                local_flags.extend([int_shell_flag, str(int_flag)])
 
         for flag, shell_flag in [
             # Limiting output