$ git clone -n https://src.fedoraproject.org/rpms/perl-DBD-Mock.git /var/lib/mock/f45-build-22695-593/root/chroot_tmpdir/scmroot/perl-DBD-Mock
Cloning into '/var/lib/mock/f45-build-22695-593/root/chroot_tmpdir/scmroot/perl-DBD-Mock'...
$ git fetch origin 873d1716f21557d7cc57967bce0520e7412fa8c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DBD-Mock
 * [new ref]         873d1716f21557d7cc57967bce0520e7412fa8c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 873d171 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild