$ git clone -n https://src.fedoraproject.org/rpms/perl-Kwiki-Diff.git /var/lib/mock/f40-build-2018340-46410/root/chroot_tmpdir/scmroot/perl-Kwiki-Diff
Cloning into '/var/lib/mock/f40-build-2018340-46410/root/chroot_tmpdir/scmroot/perl-Kwiki-Diff'...
$ git fetch origin 0ef73dcd087adb2421702335964fa91e21bba41a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Kwiki-Diff
 * [new ref]         0ef73dcd087adb2421702335964fa91e21bba41a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ef73dc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild