Fails with git 1.7.1

[eserte]

On some of my smoker systems the test suite fails:

Output from './Build test':

# git version 1.7.1
error: unknown option `local'
usage: git config [options]

Config file location
    --global              use global config file
    --system              use system config file
    -f, --file <FILE>     use given config file

Action
    --get                 get value: name [value-regex]
    --get-all             get all values: key [value-regex]
    --get-regexp          get values for regexp: name-regex [value-regex]
    --replace-all         replace all matching variables: name value [value_regex]
    --add                 adds a new variable: name value
    --unset               removes a variable: name [value-regex]
    --unset-all           removes all matches: name [value-regex]
    --rename-section      rename section: old-name new-name
    --remove-section      remove a section: name
    -l, --list            list all
    -e, --edit            opens an editor
    --get-color <slot>    find the color configured: [default]
    --get-colorbool <slot>
                          find the color setting: [stdout-is-tty]

Type
    --bool                value is "true" or "false"
    --int                 value is decimal number
    --bool-or-int         value is --bool or --int
    --path                value is a path (file or directory name)

Other
    -z, --null            terminate values with NUL byte
 at t/basic.t line 24.
t/basic.t .. 
Dubious, test returned 129 (wstat 33024, 0x8100)
No subtests run 

According to statistical analysis it fails with git 1.7.1:

****************************************************************
Regression 'qr:git version (\S+)'
****************************************************************
Name                   Theta          StdErr     T-stat
[0='const']           1.0000          0.0230      43.47
[1='eq_1.7.1']       -1.0000          0.0303     -32.99
[2='eq_2.1.4']        0.0000          0.0283       0.00
[3='eq_2.11.0']       0.0000          0.0269       0.00
[4='eq_2.14.1']       0.0000          0.0448       0.00
[5='eq_2.14.3']      -0.8000          0.0448     -17.84
[6='eq_2.15.0']       0.0000          0.0891       0.00
[7='eq_2.15.1']      -1.0000          0.0891     -11.22
[8='eq_2.7.4']        0.0000          0.0398       0.00

R^2= 0.958, N= 117, K= 9
****************************************************************

(The analysis also shows failures with git 2.15.1 (theta=-1), but currently I don't have a system with git 2.15.1 installed, so I cannot check what's the problem here (could be unrelated to git))