$ git clone -n https://src.fedoraproject.org/rpms/perl-DBD-XBase.git /var/lib/mock/f45-build-22693-593/root/chroot_tmpdir/scmroot/perl-DBD-XBase
Cloning into '/var/lib/mock/f45-build-22693-593/root/chroot_tmpdir/scmroot/perl-DBD-XBase'...
$ git fetch origin 937fdba0da55feec784207370579c721cbb0557e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DBD-XBase
 * [new ref]         937fdba0da55feec784207370579c721cbb0557e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 937fdba Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild