Setting Modification Times
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Normally, `tar' sets the modification times of extracted files to
the modification times recorded for the files in the archive, but
limits the permissions of extracted files by the current `umask'
setting.
To set the modification times of extracted files to the time when
the files were extracted, use the `--touch' (`-m') option in
conjunction with `--extract' (`--get', `-x').
`--touch'
`-m'
Sets the modification time of extracted archive members to the time
they were extracted, not the time recorded for them in the archive.
Use in conjunction with `--extract' (`--get', `-x').