$ git clone -n https://src.fedoraproject.org/rpms/perl-App-FatPacker.git /var/lib/mock/f45-build-21707-587/root/chroot_tmpdir/scmroot/perl-App-FatPacker
Cloning into '/var/lib/mock/f45-build-21707-587/root/chroot_tmpdir/scmroot/perl-App-FatPacker'...
$ git fetch origin 0819d6bc4dc7388ede5270acdb373d43475781dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-App-FatPacker
 * [new ref]         0819d6bc4dc7388ede5270acdb373d43475781dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0819d6b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild