$ git clone -n https://src.fedoraproject.org/rpms/speex.git /var/lib/mock/f41-build-814555-14252/root/chroot_tmpdir/scmroot/speex
Cloning into '/var/lib/mock/f41-build-814555-14252/root/chroot_tmpdir/scmroot/speex'...
$ git fetch origin 4a3f657a7102d93c562d1154f9ffe48b69bc7436:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/speex
 * [new ref]         4a3f657a7102d93c562d1154f9ffe48b69bc7436 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a3f657 Eliminate use of obsolete %patchN syntax (#2283636)