git fetch origin/main before make checks

[MarlonGamez]

Fixes: #5656

Description
Sets up tracking of origin/main and uses git fetch to make sure we don't run into

FATA[0000] failed running [/usr/bin/git diff --name-only origin/master -- pkg/skaffold/schema]: running [/usr/bin/git diff --name-only origin/main -- pkg/skaffold/schema]
 - stdout: ""
 - stderr: "fatal: bad revision 'origin/main'\n"
 - cause: exit status 128 

[codecov]

Codecov Report

Merging #6274 (dee631e) into main (533016e) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #6274      +/-   ##
==========================================
+ Coverage   70.86%   70.87%   +0.01%     
==========================================
  Files         490      490              
  Lines       22162    22162              
==========================================
+ Hits        15704    15708       +4     
+ Misses       5441     5439       -2     
+ Partials     1017     1015       -2     

Impacted Files	Coverage Δ
pkg/skaffold/util/tar.go	57.47% <0.00%> (+4.59%)	⬆️

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