$ git clone -n https://src.fedoraproject.org/rpms/perl-Statistics-Contingency.git /var/lib/mock/f45-build-26173-616/root/chroot_tmpdir/scmroot/perl-Statistics-Contingency
Cloning into '/var/lib/mock/f45-build-26173-616/root/chroot_tmpdir/scmroot/perl-Statistics-Contingency'...
$ git fetch origin 91d7b26e1eba5349089b9fc5abf89b214ae31c9f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Statistics-Contingency
 * [new ref]         91d7b26e1eba5349089b9fc5abf89b214ae31c9f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91d7b26 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild