rpmbuild: make_srpmbuild, set recursive safe.directory

This is byproduct of #3421

While <dir> to <dir>/* safe directory is not needed now, since different
fix was applied to the issue above,  some users might consider this
useful - they mmioght be doing manual git clones in their mock
directory, which will raise safe-directory error. There is no need to
bother them with this, thus turning this off for their whole
subdirectory.

Relates #3421

rpmbuild/copr_rpmbuild/providers/scm.py

@@ -17,7 +17,7 @@
 MAKE_SRPM_TEPMLATE = (
     "set -x && "
     'cd {0} && '
-    'echo -e "[safe]\ndirectory = {4}" > ~/.gitconfig && '
+    'echo -e "[safe]\ndirectory = {4}\ndirectory = {4}/*" > ~/.gitconfig && '
     'make -f {1} srpm outdir="{2}" spec="{3}"'
 )