$ git clone -n https://src.fedoraproject.org/rpms/perl-Kwiki-Revisions.git /var/lib/mock/f41-build-780082-13558/root/chroot_tmpdir/scmroot/perl-Kwiki-Revisions
Cloning into '/var/lib/mock/f41-build-780082-13558/root/chroot_tmpdir/scmroot/perl-Kwiki-Revisions'...
$ git fetch origin cd6d5246f4a8ad02147e752d7b34b8e54826e361:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Kwiki-Revisions
 * [new ref]         cd6d5246f4a8ad02147e752d7b34b8e54826e361 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd6d524 Eliminate use of obsolete %patchN syntax (#2283636)