$ git clone -n https://src.fedoraproject.org/rpms/thttpd.git /var/lib/mock/f41-build-1041929-18994/root/chroot_tmpdir/scmroot/thttpd
Cloning into '/var/lib/mock/f41-build-1041929-18994/root/chroot_tmpdir/scmroot/thttpd'...
$ git fetch origin 9321afcfa6e8ca6dfdd14012610de43e15ecd836:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/thttpd
 * [new ref]         9321afcfa6e8ca6dfdd14012610de43e15ecd836 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9321afc Eliminate use of obsolete %patchN syntax (#2283636)