$ git clone -n https://src.fedoraproject.org/rpms/perl-MaxMind-DB-Reader.git /var/lib/mock/f41-build-1287191-23295/root/chroot_tmpdir/scmroot/perl-MaxMind-DB-Reader
Cloning into '/var/lib/mock/f41-build-1287191-23295/root/chroot_tmpdir/scmroot/perl-MaxMind-DB-Reader'...
$ git fetch origin b7669f9b7ec7674c36db80e7d8272869f0d2277a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-MaxMind-DB-Reader
 * [new ref]         b7669f9b7ec7674c36db80e7d8272869f0d2277a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7669f9 Eliminate use of obsolete %patchN syntax (#2283636)