$ git clone -n https://src.fedoraproject.org/rpms/perl-libwhisker2.git /var/lib/mock/f41-build-1639731-24158/root/chroot_tmpdir/scmroot/perl-libwhisker2
Cloning into '/var/lib/mock/f41-build-1639731-24158/root/chroot_tmpdir/scmroot/perl-libwhisker2'...
$ git fetch origin 846076232ef34bd41db84e6dddd3eb83f9d55952:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-libwhisker2
 * [new ref]         846076232ef34bd41db84e6dddd3eb83f9d55952 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8460762 Eliminate use of obsolete %patchN syntax (#2283636)