$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-OpenSSL-EC.git /var/lib/mock/f45-build-22585-593/root/chroot_tmpdir/scmroot/perl-Crypt-OpenSSL-EC
Cloning into '/var/lib/mock/f45-build-22585-593/root/chroot_tmpdir/scmroot/perl-Crypt-OpenSSL-EC'...
$ git fetch origin 687b6de10b1214c63516c96341691a73cba66646:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-OpenSSL-EC
 * [new ref]         687b6de10b1214c63516c96341691a73cba66646 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 687b6de Perl 5.44 rebuild