$ git clone -n https://src.fedoraproject.org/rpms/netcat.git /var/lib/mock/f41-build-1029510-18396/root/chroot_tmpdir/scmroot/netcat
Cloning into '/var/lib/mock/f41-build-1029510-18396/root/chroot_tmpdir/scmroot/netcat'...
$ git fetch origin f5ef4e76bfc01944b6ef0cea57f18951d7e43af9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/netcat
 * [new ref]         f5ef4e76bfc01944b6ef0cea57f18951d7e43af9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5ef4e7 Eliminate use of obsolete %patchN syntax (#2283636)