$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-Ping-External.git /var/lib/mock/f41-build-744395-13343/root/chroot_tmpdir/scmroot/perl-Net-Ping-External
Cloning into '/var/lib/mock/f41-build-744395-13343/root/chroot_tmpdir/scmroot/perl-Net-Ping-External'...
$ git fetch origin 03d7122642d896ddf33f15ef2bec98361fc63407:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-Ping-External
 * [new ref]         03d7122642d896ddf33f15ef2bec98361fc63407 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03d7122 Eliminate use of obsolete %patchN syntax (#2283636)