$ git clone -n https://src.fedoraproject.org/rpms/fillets-ng.git /var/lib/mock/f41-build-1018733-17953/root/chroot_tmpdir/scmroot/fillets-ng
Cloning into '/var/lib/mock/f41-build-1018733-17953/root/chroot_tmpdir/scmroot/fillets-ng'...
$ git fetch origin 606b3f3f4f500d2d6693cf8e42f1e174c250b803:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fillets-ng
 * [new ref]         606b3f3f4f500d2d6693cf8e42f1e174c250b803 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 606b3f3 Eliminate use of obsolete %patchN syntax (#2283636)