Make it easier to create compat package

libgit2.spec

@@ -11,7 +11,7 @@ Release:        %autorelease
 Summary:        C implementation of the Git core methods as a library with a solid API
 License:        GPLv2 with exceptions
 URL:            https://libgit2.org/
-Source0:        https://github.com/libgit2/libgit2/archive/refs/tags/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
+Source0:        https://github.com/libgit2/libgit2/archive/refs/tags/v%{version}.tar.gz#/libgit2-%{version}.tar.gz
 
 # https://github.com/libgit2/libgit2/pull/6357
 Patch0:         libgit2-remove-ftruncate-test.patch
@@ -45,7 +45,7 @@ This package contains libraries and header files for
 developing applications that use %{name}.
 
 %prep
-%autosetup -p1
+%autosetup -p1 -n libgit2-%{version}
 
 # Remove VCS files from examples
 find examples -name ".gitignore" -delete -print