$ git clone -n https://src.fedoraproject.org/rpms/aws.git /var/lib/mock/f41-build-852072-166217/root/chroot_tmpdir/scmroot/aws
Cloning into '/var/lib/mock/f41-build-852072-166217/root/chroot_tmpdir/scmroot/aws'...
$ git fetch origin 1490d17c2bf66e6501f4981f83994de208fd2be1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aws
 * [new ref]         1490d17c2bf66e6501f4981f83994de208fd2be1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1490d17 Added a patch to handle comments in mime.types.