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#Mercurial uses revision numbers purely as a convenient shorthand. If you need to discuss a changeset with someone, or make a record of a changeset for some other reason (for example, in a bug report), use the hexadecimal identifier.
#Some changesets, have a tag field. A ''tag'' is another way to identify a changeset, by giving it an easy-to-remember name. ''tag: tip''
#To get the changeset id of the tipmost changeset of a remote repository you can do: When it changes, you have new changesets in the remote repository.
<source lang=perl>
> hg id -i -r tip http://www.selenic.com/repo/hello
82e55d328c8c
</source>