$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-Cracklib.git /var/lib/mock/f45-build-22574-593/root/chroot_tmpdir/scmroot/perl-Crypt-Cracklib
Cloning into '/var/lib/mock/f45-build-22574-593/root/chroot_tmpdir/scmroot/perl-Crypt-Cracklib'...
$ git fetch origin 4097f3e800d611bfc3a6a7307e3153a7a73c16d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-Cracklib
 * [new ref]         4097f3e800d611bfc3a6a7307e3153a7a73c16d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4097f3e Perl 5.44 rebuild