$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-Generator-DBI.git /var/lib/mock/f45-build-27492-624/root/chroot_tmpdir/scmroot/perl-XML-Generator-DBI
Cloning into '/var/lib/mock/f45-build-27492-624/root/chroot_tmpdir/scmroot/perl-XML-Generator-DBI'...
$ git fetch origin 3da2a5b7b54aa576f4e2b392b9927469656e32bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-Generator-DBI
 * [new ref]         3da2a5b7b54aa576f4e2b392b9927469656e32bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3da2a5b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild