$ git clone -n https://src.fedoraproject.org/rpms/perl-DBIx-Class.git /var/lib/mock/f41-build-1115202-20214/root/chroot_tmpdir/scmroot/perl-DBIx-Class
Cloning into '/var/lib/mock/f41-build-1115202-20214/root/chroot_tmpdir/scmroot/perl-DBIx-Class'...
$ git fetch origin 7ae6c73bd65ee773875fad00300967bf27c5fd04:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DBIx-Class
 * [new ref]         7ae6c73bd65ee773875fad00300967bf27c5fd04 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ae6c73 Eliminate use of obsolete %patchN syntax (#2283636)