$ git clone -n https://src.fedoraproject.org/rpms/perl-IP-Geolocation-MMDB.git /var/lib/mock/f45-build-24159-602/root/chroot_tmpdir/scmroot/perl-IP-Geolocation-MMDB
Cloning into '/var/lib/mock/f45-build-24159-602/root/chroot_tmpdir/scmroot/perl-IP-Geolocation-MMDB'...
$ git fetch origin b202a0f9215cc43b496416e005f2cdb5156b68c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-IP-Geolocation-MMDB
 * [new ref]         b202a0f9215cc43b496416e005f2cdb5156b68c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b202a0f Perl 5.44 rebuild