test-convert-git: Use ~ instead of ^
Solaris sh interprets ^ as pipe symbol and the test thus failed in strange
ways. git can however use of HEAD~ instead of HEAD^.
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00changelog.i
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store
updating working directory
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
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checking manifests
crosschecking files in changesets and manifests
checking files
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00changelog.i
branch
dirstate
hgrc
requires
store