$ git clone -n https://src.fedoraproject.org/rpms/perl-EBook-EPUB.git /var/lib/mock/f45-build-23250-596/root/chroot_tmpdir/scmroot/perl-EBook-EPUB
Cloning into '/var/lib/mock/f45-build-23250-596/root/chroot_tmpdir/scmroot/perl-EBook-EPUB'...
$ git fetch origin 4a7c107c55edd8cd81f20da06740bb3279af370c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-EBook-EPUB
 * [new ref]         4a7c107c55edd8cd81f20da06740bb3279af370c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a7c107 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild