This file is indexed.

/usr/src/gcc-4.8/debian/watch is in gcc-4.8-source 4.8.5-4ubuntu2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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version=2
ftp://gcc.gnu.org/pub/gcc/releases/gcc-(4\.8[\d\.]*)	debian	uupdate