$ git clone -n https://src.fedoraproject.org/rpms/perl-Business-ISBN.git /var/lib/mock/f45-build-21899-588/root/chroot_tmpdir/scmroot/perl-Business-ISBN
Cloning into '/var/lib/mock/f45-build-21899-588/root/chroot_tmpdir/scmroot/perl-Business-ISBN'...
$ git fetch origin fdb0ea6e92f341e27ad69bb38d485a6d8229322a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Business-ISBN
 * [new ref]         fdb0ea6e92f341e27ad69bb38d485a6d8229322a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdb0ea6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild