$ git clone -n https://src.fedoraproject.org/rpms/iodine.git /var/lib/mock/f41-build-785952-13590/root/chroot_tmpdir/scmroot/iodine
Cloning into '/var/lib/mock/f41-build-785952-13590/root/chroot_tmpdir/scmroot/iodine'...
$ git fetch origin ffbe1e7edb19413e1b5d1f29c4b17ead31014347:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iodine
 * [new ref]         ffbe1e7edb19413e1b5d1f29c4b17ead31014347 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ffbe1e7 Eliminate use of obsolete %patchN syntax (#2283636)