Enable debug/verbose logging to diagnose failures of fetching the repository

[matusnovak]

I have a problem that in my private repo the fetching step fails, but I could not find any way to diagnose the problem.

Such output looks like this:

Fetching the repository
  /usr/bin/git -c protocol.version=2 fetch --no-tags --prune --no-recurse-submodules --depth=1 origin +refs/heads/403/merge*:refs/remotes/origin/403/merge* +refs/tags/403/merge*:refs/tags/403/merge*
  The process '/usr/bin/git' failed with exit code 1
  Waiting 20 seconds before trying again
  /usr/bin/git -c protocol.version=2 fetch --no-tags --prune --no-recurse-submodules --depth=1 origin +refs/heads/403/merge*:refs/remotes/origin/403/merge* +refs/tags/403/merge*:refs/tags/403/merge*
  The process '/usr/bin/git' failed with exit code 1
  Waiting 11 seconds before trying again
  /usr/bin/git -c protocol.version=2 fetch --no-tags --prune --no-recurse-submodules --depth=1 origin +refs/heads/403/merge*:refs/remotes/origin/403/merge* +refs/tags/403/merge*:refs/tags/403/merge*
Error: The process '/usr/bin/git' failed with exit code 1

Which is not helpful.

Is there any way how I can enable debug or verbose logging for actions/checkout, so that I could diagnose the problem on why the git command failed?