Add deprecated-mode.git test repository

tests-clar/resources/deprecated-mode.git/HEAD

+ref: refs/heads/master

tests-clar/resources/deprecated-mode.git/config

+[core]
+	bare = true
+	repositoryformatversion = 0
+	filemode = false
+	logallrefupdates = true
+	ignorecase = true

tests-clar/resources/deprecated-mode.git/description

+Unnamed repository; edit this file 'description' to name the repository.

tests-clar/resources/deprecated-mode.git/hooks/README.sample

+#!/bin/sh
+#
+# Place appropriately named executable hook scripts into this directory
+# to intercept various actions that git takes.  See `git help hooks` for
+# more information.

tests-clar/resources/deprecated-mode.git/info/exclude

+# File patterns to ignore; see `git help ignore` for more information.
+# Lines that start with '#' are comments.

tests-clar/resources/deprecated-mode.git/refs/heads/master

+06262edc257418e9987caf999f9a7a3e1547adff