Fix log messages

[martincostello]

• Fix incorrect log messages confusing the original branch and the target branch.
• Bump version to 1.0.1.

[codecov]

Codecov Report

Patch coverage: 71.42% and no project coverage change.

Comparison is base (15134b6) 82.14% compared to head (9aaa5d4) 82.14%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #15   +/-   ##
=======================================
  Coverage   82.14%   82.14%           
=======================================
  Files           5        5           
  Lines         224      224           
  Branches       59       59           
=======================================
  Hits          184      184           
  Misses         31       31           
  Partials        9        9           

Flag	Coverage Δ
linux	?
macos	82.14% <71.42%> (ø)
windows	82.14% <71.42%> (ø)

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Files Changed	Coverage Δ
src/main.ts	57.89% <0.00%> (ø)
src/Rebaser.ts	77.77% <83.33%> (ø)

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