$ git clone -n https://src.fedoraproject.org/rpms/perl-Kwiki-RecentChanges.git /var/lib/mock/f41-build-780069-13558/root/chroot_tmpdir/scmroot/perl-Kwiki-RecentChanges
Cloning into '/var/lib/mock/f41-build-780069-13558/root/chroot_tmpdir/scmroot/perl-Kwiki-RecentChanges'...
$ git fetch origin 8013d1964675b4d53a1b9e17b684d6fc46d08e82:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Kwiki-RecentChanges
 * [new ref]         8013d1964675b4d53a1b9e17b684d6fc46d08e82 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8013d19 Eliminate use of obsolete %patchN syntax (#2283636)