[xsl] How might I reproduce a tag, but change one attribute?

[footh <footh@xxxxxxxxx>]

This seems like it should be easy but I can't figure
out a way to do it.  I want to duplicate, for example,
an <img> tag exactly, except I want to change one
attribute, the "src".  The only way I can think of
doing it in an xsl template is by just repeating the
tag and every possible attribute that might exist. 
Ex:

<img src="/images/{@src}" title="{@title}"
width="{@width}" ...etc.

I really would prefer to not have to figure out every
single attribute that might exist (there are other
tags I want to do this for too).

Does anyone have advice as to how this might be
accomplished?

Thanks,

JF

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