$ git clone -n https://src.fedoraproject.org/rpms/erlang-gtknode.git /var/lib/mock/f41-build-884534-16596/root/chroot_tmpdir/scmroot/erlang-gtknode
Cloning into '/var/lib/mock/f41-build-884534-16596/root/chroot_tmpdir/scmroot/erlang-gtknode'...
$ git fetch origin 2ae4eec2a222d0ca2c522de90465e86a853a4956:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-gtknode
 * [new ref]         2ae4eec2a222d0ca2c522de90465e86a853a4956 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ae4eec Eliminate use of obsolete %patchN syntax (#2283636)