Does Git build things during 'make install"?

My script to build Git dies during cleanup. Cleanup removes the
downloaded tarball and the unpacked directory:

********** Cleanup **********

rm: cannot remove 'git-2.14.2/perl/blib/lib/.exists': Permission denied
rm: cannot remove 'git-2.14.2/perl/blib/lib/Git/SVN/Fetcher.pm':
Permission denied
rm: cannot remove 'git-2.14.2/perl/blib/lib/Git/SVN/Utils.pm': Permission denied
rm: cannot remove 'git-2.14.2/perl/blib/lib/Git/SVN/Ra.pm': Permission denied
rm: cannot remove 'git-2.14.2/perl/blib/lib/Git/SVN/GlobSpec.pm':
Permission denied
...

When I look at the permissions:

$ ls -Al git-2.14.2/perl/blib/lib/.exists
-rw-r--r--   1 root     root           0 Oct 16 00:43
git-2.14.2/perl/blib/lib/.exists

The only place in my script that does anything with privileges is
'make install' because it runs with sudo.

Is Git building things in the install recipe? If so, then I don't
believe that's supposed to happen. According to the GNU coding
standards, Git should not be doing that. Cf;
https://www.gnu.org/prep/standards/html_node/Standard-Targets.html.

Jeff