$ git clone -n https://src.fedoraproject.org/rpms/perl-MaxMind-DB-Reader-XS.git /var/lib/mock/f41-build-691961-12735/root/chroot_tmpdir/scmroot/perl-MaxMind-DB-Reader-XS
Cloning into '/var/lib/mock/f41-build-691961-12735/root/chroot_tmpdir/scmroot/perl-MaxMind-DB-Reader-XS'...
$ git fetch origin dbe785bad001c2a1449b898141047b600bd12f82:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-MaxMind-DB-Reader-XS
 * [new ref]         dbe785bad001c2a1449b898141047b600bd12f82 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbe785b Eliminate use of obsolete %patchN syntax (#2283636)